Y4V13Si2(SbO14)2 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(12), one O(2), one O(28), one O(5), and one O(8) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids, corners with two equivalent V(11)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid,  an edgeedge with one Y(3)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 59-71°. In the second Y site, Y(2) is bonded to one O(1), one O(19), one O(2), one O(24), and one O(28) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids, corners with two equivalent V(4)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one Y(4)O5 trigonal bipyramid, and  an edgeedge with one V(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-71°. In the third Y site, Y(3) is bonded to one O(2), one O(24), one O(27), one O(5), and one O(7) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids, corners with two equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one Y(4)O5 trigonal bipyramid, and  an edgeedge with one V(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-71°. In the fourth Y site, Y(4) is bonded to one O(13), one O(24), one O(28), one O(5), and one O(6) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent V(1)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid,  an edgeedge with one Y(3)O5 trigonal bipyramid, and  an edgeedge with one V(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-71°. There are thirteen inequivalent V sites. In the first V site, V(1) is bonded to one O(21), one O(25), one O(27), one O(5), and one O(6) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids, corners with two equivalent V(5)O5 trigonal bipyramids,  an edgeedge with one Y(3)O5 trigonal bipyramid,  an edgeedge with one V(10)O5 trigonal bipyramid, and  an edgeedge with one V(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 55-69°. In the second V site, V(2) is bonded to one O(1), one O(11), one O(14), one O(15), and one O(3) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid, corners with two equivalent V(4)O5 trigonal bipyramids,  an edgeedge with one V(11)O5 trigonal bipyramid, and  an edgeedge with one V(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 57-65°. In the third V site, V(3) is bonded to one O(22), one O(23), one O(24), one O(27), and one O(6) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids, corners with two equivalent V(10)O5 trigonal bipyramids,  an edgeedge with one Y(4)O5 trigonal bipyramid,  an edgeedge with one V(1)O5 trigonal bipyramid, and  an edgeedge with one V(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-64°. In the fourth V site, V(4) is bonded to one O(1), one O(11), one O(12), one O(2), and one O(20) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids, corners with two equivalent V(2)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one V(11)O5 trigonal bipyramid, and  an edgeedge with one V(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-67°. In the fifth V site, V(5) is bonded to one O(16), one O(17), one O(22), one O(25), and one O(6) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid, corners with two equivalent V(1)O5 trigonal bipyramids,  an edgeedge with one V(10)O5 trigonal bipyramid, and  an edgeedge with one V(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-65°. In the sixth V site, V(6) is bonded to one O(13), one O(19), one O(20), one O(26), one O(7), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  an edgeedge with one V(9)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent V(13)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the seventh V site, V(7) is bonded to one O(10), one O(11), one O(12), one O(15), and one O(16) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid, corners with two equivalent V(11)O5 trigonal bipyramids,  an edgeedge with one V(2)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-64°. In the eighth V site, V(8) is bonded to one O(10), one O(14), one O(17), one O(18), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid,  an edgeedge with one Sb(1)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent V(12)O6 octahedra, and edges with two equivalent V(9)O6 octahedra. In the ninth V site, V(9) is bonded to one O(10), one O(14), one O(20), one O(26), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid,  an edgeedge with one V(12)O6 octahedra,  an edgeedge with one V(6)O6 octahedra, edges with two equivalent V(8)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the tenth V site, V(10) is bonded to one O(18), one O(22), one O(25), one O(27), and one O(3) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid, corners with two equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one V(1)O5 trigonal bipyramid, and  an edgeedge with one V(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 57-65°. In the eleventh V site, V(11) is bonded to one O(1), one O(12), one O(15), one O(26), and one O(28) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent V(7)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid,  an edgeedge with one V(2)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 55-66°. In the twelfth V site, V(12) is bonded to one O(17), one O(18), one O(21), one O(23), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  an edgeedge with one V(13)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, edges with two equivalent V(8)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. In the thirteenth V site, V(13) is bonded to one O(13), one O(19), one O(21), one O(23), one O(7), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid,  an edgeedge with one V(12)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with two equivalent V(6)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(22), one O(3), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one V(3)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid, corners with two equivalent V(10)O5 trigonal bipyramids, and corners with two equivalent V(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-66°. In the second Si site, Si(2) is bonded to one O(15), one O(16), one O(25), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid, corners with two equivalent V(5)O5 trigonal bipyramids, and corners with two equivalent V(7)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 58-67°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(14), one O(19), one O(20), one O(26), and one O(8) atom to form distorted SbO6 octahedra that share  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid,  an edgeedge with one V(13)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, edges with two equivalent V(6)O6 octahedra, and edges with two equivalent V(9)O6 octahedra. In the second Sb site, Sb(2) is bonded to one O(13), one O(17), one O(18), one O(21), one O(23), and one O(7) atom to form distorted SbO6 octahedra that share  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, edges with two equivalent V(12)O6 octahedra, and edges with two equivalent V(13)O6 octahedra. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(2), one V(11), one V(2), and one V(4) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra, corners with two equivalent O(11)V3Si tetrahedra, corners with two equivalent O(2)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  an edgeedge with one O(28)Y3V tetrahedra, and  an edgeedge with one O(12)YV3 trigonal pyramid. In the second O site, O(2) is bonded to one Y(1), one Y(2), one Y(3), and one V(4) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(24)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  a cornercorner with one O(27)YV3 trigonal pyramid, corners with two equivalent O(1)YV3 trigonal pyramids,  an edgeedge with one O(28)Y3V tetrahedra,  an edgeedge with one O(5)Y3V tetrahedra, and  an edgeedge with one O(12)YV3 trigonal pyramid. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one V(10), one V(2), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one V(12), one V(8), one V(9), and one Si(1) atom. In the fifth O site, O(5) is bonded to one Y(1), one Y(3), one Y(4), and one V(1) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(28)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(12)YV3 trigonal pyramid, corners with two equivalent O(6)YV3 trigonal pyramids,  an edgeedge with one O(2)Y3V tetrahedra,  an edgeedge with one O(24)Y3V tetrahedra, and  an edgeedge with one O(27)YV3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Y(4), one V(1), one V(3), and one V(5) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra, corners with two equivalent O(25)V3Si tetrahedra, corners with two equivalent O(5)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  an edgeedge with one O(22)V3Si tetrahedra,  an edgeedge with one O(24)Y3V tetrahedra, and  an edgeedge with one O(27)YV3 trigonal pyramid. In the seventh O site, O(7) is bonded to one Y(3), one V(13), one V(6), and one Sb(2) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra, corners with two equivalent O(23)V3Sb tetrahedra, corners with two equivalent O(19)YV2Sb tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  a cornercorner with one O(27)YV3 trigonal pyramid,  an edgeedge with one O(13)YV2Sb tetrahedra,  an edgeedge with one O(8)YV2Sb tetrahedra, and  an edgeedge with one O(21)V3Sb trigonal pyramid. In the eighth O site, O(8) is bonded to one Y(1), one V(13), one V(6), and one Sb(1) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra, corners with two equivalent O(13)YV2Sb tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(12)YV3 trigonal pyramid,  an edgeedge with one O(19)YV2Sb tetrahedra,  an edgeedge with one O(7)YV2Sb tetrahedra, and  an edgeedge with one O(20)V3Sb trigonal pyramid. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one V(12), one V(8), one V(9), and one Si(2) atom. In the tenth O site, O(10) is bonded to one V(7), one V(8), one V(9), and one Sb(1) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra,  a cornercorner with one O(12)YV3 trigonal pyramid,  an edgeedge with one O(14)V3Sb tetrahedra, and  an edgeedge with one O(20)V3Sb trigonal pyramid. In the eleventh O site, O(11) is bonded to one V(2), one V(4), one V(7), and one Si(1) atom to form distorted OV3Si tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid, corners with two equivalent O(1)YV3 trigonal pyramids, and  an edgeedge with one O(12)YV3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Y(1), one V(11), one V(4), and one V(7) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(28)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  an edgeedge with one O(11)V3Si tetrahedra,  an edgeedge with one O(2)Y3V tetrahedra, and  an edgeedge with one O(1)YV3 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Y(4), one V(13), one V(6), and one Sb(2) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(8)YV2Sb tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  a cornercorner with one O(6)YV3 trigonal pyramid, corners with two equivalent O(21)V3Sb trigonal pyramids,  an edgeedge with one O(23)V3Sb tetrahedra,  an edgeedge with one O(19)YV2Sb tetrahedra, and  an edgeedge with one O(7)YV2Sb tetrahedra. In the fourteenth O site, O(14) is bonded to one V(2), one V(8), one V(9), and one Sb(1) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra,  a cornercorner with one O(1)YV3 trigonal pyramid, corners with two equivalent O(20)V3Sb trigonal pyramids, and  an edgeedge with one O(10)V3Sb tetrahedra. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one V(11), one V(2), one V(7), and one Si(2) atom. In the sixteenth O site, O(16) is bonded in a distorted T-shaped geometry to one V(5), one V(7), and one Si(2) atom. In the seventeenth O site, O(17) is bonded to one V(12), one V(5), one V(8), and one Sb(2) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra,  a cornercorner with one O(6)YV3 trigonal pyramid, corners with two equivalent O(21)V3Sb trigonal pyramids,  an edgeedge with one O(18)V3Sb tetrahedra, and  an edgeedge with one O(23)V3Sb tetrahedra. In the eighteenth O site, O(18) is bonded to one V(10), one V(12), one V(8), and one Sb(2) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(23)V3Sb tetrahedra,  a cornercorner with one O(27)YV3 trigonal pyramid,  an edgeedge with one O(17)V3Sb tetrahedra, and  an edgeedge with one O(21)V3Sb trigonal pyramid. In the nineteenth O site, O(19) is bonded to one Y(2), one V(13), one V(6), and one Sb(1) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(7)YV2Sb tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(1)YV3 trigonal pyramid, corners with two equivalent O(20)V3Sb trigonal pyramids,  an edgeedge with one O(13)YV2Sb tetrahedra, and  an edgeedge with one O(8)YV2Sb tetrahedra. In the twentieth O site, O(20) is bonded to one V(4), one V(6), one V(9), and one Sb(1) atom to form distorted OV3Sb trigonal pyramids that share  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(14)V3Sb tetrahedra, corners with two equivalent O(19)YV2Sb tetrahedra,  a cornercorner with one O(1)YV3 trigonal pyramid,  a cornercorner with one O(12)YV3 trigonal pyramid,  an edgeedge with one O(10)V3Sb tetrahedra, and  an edgeedge with one O(8)YV2Sb tetrahedra. In the twenty-first O site, O(21) is bonded to one V(1), one V(12), one V(13), and one Sb(2) atom to form distorted OV3Sb trigonal pyramids that share  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(17)V3Sb tetrahedra, corners with two equivalent O(13)YV2Sb tetrahedra,  a cornercorner with one O(27)YV3 trigonal pyramid,  a cornercorner with one O(6)YV3 trigonal pyramid,  an edgeedge with one O(18)V3Sb tetrahedra,  an edgeedge with one O(23)V3Sb tetrahedra, and  an edgeedge with one O(7)YV2Sb tetrahedra. In the twenty-second O site, O(22) is bonded to one V(10), one V(3), one V(5), and one Si(1) atom to form distorted OV3Si tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra, corners with two equivalent O(27)YV3 trigonal pyramids,  an edgeedge with one O(25)V3Si tetrahedra, and  an edgeedge with one O(6)YV3 trigonal pyramid. In the twenty-third O site, O(23) is bonded to one V(12), one V(13), one V(3), and one Sb(2) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(18)V3Sb tetrahedra, corners with two equivalent O(7)YV2Sb tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(27)YV3 trigonal pyramid,  a cornercorner with one O(6)YV3 trigonal pyramid,  an edgeedge with one O(17)V3Sb tetrahedra,  an edgeedge with one O(13)YV2Sb tetrahedra, and  an edgeedge with one O(21)V3Sb trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Y(2), one Y(3), one Y(4), and one V(3) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(2)Y3V tetrahedra,  a cornercorner with one O(1)YV3 trigonal pyramid, corners with two equivalent O(27)YV3 trigonal pyramids,  an edgeedge with one O(28)Y3V tetrahedra,  an edgeedge with one O(5)Y3V tetrahedra, and  an edgeedge with one O(6)YV3 trigonal pyramid. In the twenty-fifth O site, O(25) is bonded to one V(1), one V(10), one V(5), and one Si(2) atom to form distorted OV3Si tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid, corners with two equivalent O(6)YV3 trigonal pyramids,  an edgeedge with one O(22)V3Si tetrahedra, and  an edgeedge with one O(27)YV3 trigonal pyramid. In the twenty-sixth O site, O(26) is bonded in a distorted rectangular see-saw-like geometry to one V(11), one V(6), one V(9), and one Sb(1) atom. In the twenty-seventh O site, O(27) is bonded to one Y(3), one V(1), one V(10), and one V(3) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(22)V3Si tetrahedra, corners with two equivalent O(24)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  an edgeedge with one O(25)V3Si tetrahedra,  an edgeedge with one O(5)Y3V tetrahedra, and  an edgeedge with one O(6)YV3 trigonal pyramid. In the twenty-eighth O site, O(28) is bonded to one Y(1), one Y(2), one Y(4), and one V(11) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(5)Y3V tetrahedra,  a cornercorner with one O(6)YV3 trigonal pyramid, corners with two equivalent O(12)YV3 trigonal pyramids,  an edgeedge with one O(2)Y3V tetrahedra,  an edgeedge with one O(24)Y3V tetrahedra, and  an edgeedge with one O(1)YV3 trigonal pyramid.
Y4V13Si2(SbO14)2 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(12), one O(2), one O(28), one O(5), and one O(8) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids, corners with two equivalent V(11)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid,  an edgeedge with one Y(3)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 59-71°. The Y(1)-O(12) bond length is 2.17 Å. The Y(1)-O(2) bond length is 2.40 Å. The Y(1)-O(28) bond length is 2.21 Å. The Y(1)-O(5) bond length is 2.23 Å. The Y(1)-O(8) bond length is 2.13 Å. In the second Y site, Y(2) is bonded to one O(1), one O(19), one O(2), one O(24), and one O(28) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids, corners with two equivalent V(4)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one Y(4)O5 trigonal bipyramid, and  an edgeedge with one V(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-71°. The Y(2)-O(1) bond length is 2.17 Å. The Y(2)-O(19) bond length is 2.12 Å. The Y(2)-O(2) bond length is 2.19 Å. The Y(2)-O(24) bond length is 2.23 Å. The Y(2)-O(28) bond length is 2.40 Å. In the third Y site, Y(3) is bonded to one O(2), one O(24), one O(27), one O(5), and one O(7) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids, corners with two equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one Y(4)O5 trigonal bipyramid, and  an edgeedge with one V(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-71°. The Y(3)-O(2) bond length is 2.23 Å. The Y(3)-O(24) bond length is 2.20 Å. The Y(3)-O(27) bond length is 2.17 Å. The Y(3)-O(5) bond length is 2.41 Å. The Y(3)-O(7) bond length is 2.13 Å. In the fourth Y site, Y(4) is bonded to one O(13), one O(24), one O(28), one O(5), and one O(6) atom to form distorted YO5 trigonal bipyramids that share  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent V(1)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid,  an edgeedge with one Y(3)O5 trigonal bipyramid, and  an edgeedge with one V(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-71°. The Y(4)-O(13) bond length is 2.13 Å. The Y(4)-O(24) bond length is 2.40 Å. The Y(4)-O(28) bond length is 2.24 Å. The Y(4)-O(5) bond length is 2.19 Å. The Y(4)-O(6) bond length is 2.18 Å. There are thirteen inequivalent V sites. In the first V site, V(1) is bonded to one O(21), one O(25), one O(27), one O(5), and one O(6) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids, corners with two equivalent V(5)O5 trigonal bipyramids,  an edgeedge with one Y(3)O5 trigonal bipyramid,  an edgeedge with one V(10)O5 trigonal bipyramid, and  an edgeedge with one V(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 55-69°. The V(1)-O(21) bond length is 2.09 Å. The V(1)-O(25) bond length is 2.08 Å. The V(1)-O(27) bond length is 2.29 Å. The V(1)-O(5) bond length is 2.03 Å. The V(1)-O(6) bond length is 2.07 Å. In the second V site, V(2) is bonded to one O(1), one O(11), one O(14), one O(15), and one O(3) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid, corners with two equivalent V(4)O5 trigonal bipyramids,  an edgeedge with one V(11)O5 trigonal bipyramid, and  an edgeedge with one V(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 57-65°. The V(2)-O(1) bond length is 2.01 Å. The V(2)-O(11) bond length is 2.09 Å. The V(2)-O(14) bond length is 2.01 Å. The V(2)-O(15) bond length is 2.42 Å. The V(2)-O(3) bond length is 2.07 Å. In the third V site, V(3) is bonded to one O(22), one O(23), one O(24), one O(27), and one O(6) atom to form VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids, corners with two equivalent V(10)O5 trigonal bipyramids,  an edgeedge with one Y(4)O5 trigonal bipyramid,  an edgeedge with one V(1)O5 trigonal bipyramid, and  an edgeedge with one V(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-64°. The V(3)-O(22) bond length is 2.07 Å. The V(3)-O(23) bond length is 2.10 Å. The V(3)-O(24) bond length is 2.02 Å. The V(3)-O(27) bond length is 2.05 Å. The V(3)-O(6) bond length is 2.28 Å. In the fourth V site, V(4) is bonded to one O(1), one O(11), one O(12), one O(2), and one O(20) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids, corners with two equivalent V(2)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one V(11)O5 trigonal bipyramid, and  an edgeedge with one V(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-67°. The V(4)-O(1) bond length is 2.05 Å. The V(4)-O(11) bond length is 2.07 Å. The V(4)-O(12) bond length is 2.29 Å. The V(4)-O(2) bond length is 2.02 Å. The V(4)-O(20) bond length is 2.10 Å. In the fifth V site, V(5) is bonded to one O(16), one O(17), one O(22), one O(25), and one O(6) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid, corners with two equivalent V(1)O5 trigonal bipyramids,  an edgeedge with one V(10)O5 trigonal bipyramid, and  an edgeedge with one V(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-65°. The V(5)-O(16) bond length is 2.07 Å. The V(5)-O(17) bond length is 2.03 Å. The V(5)-O(22) bond length is 2.42 Å. The V(5)-O(25) bond length is 2.08 Å. The V(5)-O(6) bond length is 2.03 Å. In the sixth V site, V(6) is bonded to one O(13), one O(19), one O(20), one O(26), one O(7), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  an edgeedge with one V(9)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent V(13)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The V(6)-O(13) bond length is 2.24 Å. The V(6)-O(19) bond length is 2.21 Å. The V(6)-O(20) bond length is 2.29 Å. The V(6)-O(26) bond length is 2.30 Å. The V(6)-O(7) bond length is 2.25 Å. The V(6)-O(8) bond length is 2.21 Å. In the seventh V site, V(7) is bonded to one O(10), one O(11), one O(12), one O(15), and one O(16) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid, corners with two equivalent V(11)O5 trigonal bipyramids,  an edgeedge with one V(2)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-64°. The V(7)-O(10) bond length is 2.04 Å. The V(7)-O(11) bond length is 2.39 Å. The V(7)-O(12) bond length is 2.05 Å. The V(7)-O(15) bond length is 2.10 Å. The V(7)-O(16) bond length is 2.10 Å. In the eighth V site, V(8) is bonded to one O(10), one O(14), one O(17), one O(18), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid,  an edgeedge with one Sb(1)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent V(12)O6 octahedra, and edges with two equivalent V(9)O6 octahedra. The V(8)-O(10) bond length is 2.25 Å. The V(8)-O(14) bond length is 2.24 Å. The V(8)-O(17) bond length is 2.24 Å. The V(8)-O(18) bond length is 2.25 Å. The V(8)-O(4) bond length is 2.33 Å. The V(8)-O(9) bond length is 2.33 Å. In the ninth V site, V(9) is bonded to one O(10), one O(14), one O(20), one O(26), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid,  an edgeedge with one V(12)O6 octahedra,  an edgeedge with one V(6)O6 octahedra, edges with two equivalent V(8)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The V(9)-O(10) bond length is 2.01 Å. The V(9)-O(14) bond length is 2.02 Å. The V(9)-O(20) bond length is 2.09 Å. The V(9)-O(26) bond length is 2.12 Å. The V(9)-O(4) bond length is 2.28 Å. The V(9)-O(9) bond length is 2.29 Å. In the tenth V site, V(10) is bonded to one O(18), one O(22), one O(25), one O(27), and one O(3) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid, corners with two equivalent V(3)O5 trigonal bipyramids,  an edgeedge with one V(1)O5 trigonal bipyramid, and  an edgeedge with one V(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 57-65°. The V(10)-O(18) bond length is 2.02 Å. The V(10)-O(22) bond length is 2.08 Å. The V(10)-O(25) bond length is 2.40 Å. The V(10)-O(27) bond length is 2.03 Å. The V(10)-O(3) bond length is 2.08 Å. In the eleventh V site, V(11) is bonded to one O(1), one O(12), one O(15), one O(26), and one O(28) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(6)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent V(7)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid,  an edgeedge with one V(2)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 55-66°. The V(11)-O(1) bond length is 2.33 Å. The V(11)-O(12) bond length is 2.01 Å. The V(11)-O(15) bond length is 2.02 Å. The V(11)-O(26) bond length is 2.06 Å. The V(11)-O(28) bond length is 2.01 Å. In the twelfth V site, V(12) is bonded to one O(17), one O(18), one O(21), one O(23), one O(4), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  an edgeedge with one V(13)O6 octahedra,  an edgeedge with one V(9)O6 octahedra, edges with two equivalent V(8)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. The V(12)-O(17) bond length is 2.02 Å. The V(12)-O(18) bond length is 2.02 Å. The V(12)-O(21) bond length is 2.05 Å. The V(12)-O(23) bond length is 2.14 Å. The V(12)-O(4) bond length is 2.33 Å. The V(12)-O(9) bond length is 2.28 Å. In the thirteenth V site, V(13) is bonded to one O(13), one O(19), one O(21), one O(23), one O(7), and one O(8) atom to form VO6 octahedra that share  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid,  an edgeedge with one V(12)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with two equivalent V(6)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. The V(13)-O(13) bond length is 2.20 Å. The V(13)-O(19) bond length is 2.25 Å. The V(13)-O(21) bond length is 2.27 Å. The V(13)-O(23) bond length is 2.30 Å. The V(13)-O(7) bond length is 2.21 Å. The V(13)-O(8) bond length is 2.26 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(22), one O(3), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one V(3)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid, corners with two equivalent V(10)O5 trigonal bipyramids, and corners with two equivalent V(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-66°. The Si(1)-O(11) bond length is 1.68 Å. The Si(1)-O(22) bond length is 1.68 Å. The Si(1)-O(3) bond length is 1.63 Å. The Si(1)-O(4) bond length is 1.64 Å. In the second Si site, Si(2) is bonded to one O(15), one O(16), one O(25), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one V(12)O6 octahedra,  a cornercorner with one V(8)O6 octahedra,  a cornercorner with one V(9)O6 octahedra,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid, corners with two equivalent V(5)O5 trigonal bipyramids, and corners with two equivalent V(7)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 58-67°. The Si(2)-O(15) bond length is 1.68 Å. The Si(2)-O(16) bond length is 1.63 Å. The Si(2)-O(25) bond length is 1.68 Å. The Si(2)-O(9) bond length is 1.64 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(14), one O(19), one O(20), one O(26), and one O(8) atom to form distorted SbO6 octahedra that share  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one V(11)O5 trigonal bipyramid,  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  a cornercorner with one V(7)O5 trigonal bipyramid,  an edgeedge with one V(13)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, edges with two equivalent V(6)O6 octahedra, and edges with two equivalent V(9)O6 octahedra. The Sb(1)-O(10) bond length is 2.45 Å. The Sb(1)-O(14) bond length is 2.49 Å. The Sb(1)-O(19) bond length is 2.20 Å. The Sb(1)-O(20) bond length is 2.35 Å. The Sb(1)-O(26) bond length is 2.40 Å. The Sb(1)-O(8) bond length is 2.19 Å. In the second Sb site, Sb(2) is bonded to one O(13), one O(17), one O(18), one O(21), one O(23), and one O(7) atom to form distorted SbO6 octahedra that share  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one V(1)O5 trigonal bipyramid,  a cornercorner with one V(10)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid,  a cornercorner with one V(5)O5 trigonal bipyramid,  an edgeedge with one V(6)O6 octahedra,  an edgeedge with one V(8)O6 octahedra, edges with two equivalent V(12)O6 octahedra, and edges with two equivalent V(13)O6 octahedra. The Sb(2)-O(13) bond length is 2.19 Å. The Sb(2)-O(17) bond length is 2.46 Å. The Sb(2)-O(18) bond length is 2.50 Å. The Sb(2)-O(21) bond length is 2.46 Å. The Sb(2)-O(23) bond length is 2.28 Å. The Sb(2)-O(7) bond length is 2.21 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(2), one V(11), one V(2), and one V(4) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra, corners with two equivalent O(11)V3Si tetrahedra, corners with two equivalent O(2)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  an edgeedge with one O(28)Y3V tetrahedra, and  an edgeedge with one O(12)YV3 trigonal pyramid. In the second O site, O(2) is bonded to one Y(1), one Y(2), one Y(3), and one V(4) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(24)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  a cornercorner with one O(27)YV3 trigonal pyramid, corners with two equivalent O(1)YV3 trigonal pyramids,  an edgeedge with one O(28)Y3V tetrahedra,  an edgeedge with one O(5)Y3V tetrahedra, and  an edgeedge with one O(12)YV3 trigonal pyramid. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one V(10), one V(2), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one V(12), one V(8), one V(9), and one Si(1) atom. In the fifth O site, O(5) is bonded to one Y(1), one Y(3), one Y(4), and one V(1) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(28)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(12)YV3 trigonal pyramid, corners with two equivalent O(6)YV3 trigonal pyramids,  an edgeedge with one O(2)Y3V tetrahedra,  an edgeedge with one O(24)Y3V tetrahedra, and  an edgeedge with one O(27)YV3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Y(4), one V(1), one V(3), and one V(5) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra, corners with two equivalent O(25)V3Si tetrahedra, corners with two equivalent O(5)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  an edgeedge with one O(22)V3Si tetrahedra,  an edgeedge with one O(24)Y3V tetrahedra, and  an edgeedge with one O(27)YV3 trigonal pyramid. In the seventh O site, O(7) is bonded to one Y(3), one V(13), one V(6), and one Sb(2) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra, corners with two equivalent O(23)V3Sb tetrahedra, corners with two equivalent O(19)YV2Sb tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  a cornercorner with one O(27)YV3 trigonal pyramid,  an edgeedge with one O(13)YV2Sb tetrahedra,  an edgeedge with one O(8)YV2Sb tetrahedra, and  an edgeedge with one O(21)V3Sb trigonal pyramid. In the eighth O site, O(8) is bonded to one Y(1), one V(13), one V(6), and one Sb(1) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra, corners with two equivalent O(13)YV2Sb tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(12)YV3 trigonal pyramid,  an edgeedge with one O(19)YV2Sb tetrahedra,  an edgeedge with one O(7)YV2Sb tetrahedra, and  an edgeedge with one O(20)V3Sb trigonal pyramid. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one V(12), one V(8), one V(9), and one Si(2) atom. In the tenth O site, O(10) is bonded to one V(7), one V(8), one V(9), and one Sb(1) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra,  a cornercorner with one O(12)YV3 trigonal pyramid,  an edgeedge with one O(14)V3Sb tetrahedra, and  an edgeedge with one O(20)V3Sb trigonal pyramid. In the eleventh O site, O(11) is bonded to one V(2), one V(4), one V(7), and one Si(1) atom to form distorted OV3Si tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid, corners with two equivalent O(1)YV3 trigonal pyramids, and  an edgeedge with one O(12)YV3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Y(1), one V(11), one V(4), and one V(7) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(28)Y3V tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  an edgeedge with one O(11)V3Si tetrahedra,  an edgeedge with one O(2)Y3V tetrahedra, and  an edgeedge with one O(1)YV3 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Y(4), one V(13), one V(6), and one Sb(2) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(8)YV2Sb tetrahedra,  a cornercorner with one O(20)V3Sb trigonal pyramid,  a cornercorner with one O(6)YV3 trigonal pyramid, corners with two equivalent O(21)V3Sb trigonal pyramids,  an edgeedge with one O(23)V3Sb tetrahedra,  an edgeedge with one O(19)YV2Sb tetrahedra, and  an edgeedge with one O(7)YV2Sb tetrahedra. In the fourteenth O site, O(14) is bonded to one V(2), one V(8), one V(9), and one Sb(1) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra,  a cornercorner with one O(1)YV3 trigonal pyramid, corners with two equivalent O(20)V3Sb trigonal pyramids, and  an edgeedge with one O(10)V3Sb tetrahedra. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one V(11), one V(2), one V(7), and one Si(2) atom. In the sixteenth O site, O(16) is bonded in a distorted T-shaped geometry to one V(5), one V(7), and one Si(2) atom. In the seventeenth O site, O(17) is bonded to one V(12), one V(5), one V(8), and one Sb(2) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra,  a cornercorner with one O(6)YV3 trigonal pyramid, corners with two equivalent O(21)V3Sb trigonal pyramids,  an edgeedge with one O(18)V3Sb tetrahedra, and  an edgeedge with one O(23)V3Sb tetrahedra. In the eighteenth O site, O(18) is bonded to one V(10), one V(12), one V(8), and one Sb(2) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(23)V3Sb tetrahedra,  a cornercorner with one O(27)YV3 trigonal pyramid,  an edgeedge with one O(17)V3Sb tetrahedra, and  an edgeedge with one O(21)V3Sb trigonal pyramid. In the nineteenth O site, O(19) is bonded to one Y(2), one V(13), one V(6), and one Sb(1) atom to form OYV2Sb tetrahedra that share  a cornercorner with one O(10)V3Sb tetrahedra,  a cornercorner with one O(14)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(28)Y3V tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(7)YV2Sb tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(1)YV3 trigonal pyramid, corners with two equivalent O(20)V3Sb trigonal pyramids,  an edgeedge with one O(13)YV2Sb tetrahedra, and  an edgeedge with one O(8)YV2Sb tetrahedra. In the twentieth O site, O(20) is bonded to one V(4), one V(6), one V(9), and one Sb(1) atom to form distorted OV3Sb trigonal pyramids that share  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(14)V3Sb tetrahedra, corners with two equivalent O(19)YV2Sb tetrahedra,  a cornercorner with one O(1)YV3 trigonal pyramid,  a cornercorner with one O(12)YV3 trigonal pyramid,  an edgeedge with one O(10)V3Sb tetrahedra, and  an edgeedge with one O(8)YV2Sb tetrahedra. In the twenty-first O site, O(21) is bonded to one V(1), one V(12), one V(13), and one Sb(2) atom to form distorted OV3Sb trigonal pyramids that share  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(25)V3Si tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(17)V3Sb tetrahedra, corners with two equivalent O(13)YV2Sb tetrahedra,  a cornercorner with one O(27)YV3 trigonal pyramid,  a cornercorner with one O(6)YV3 trigonal pyramid,  an edgeedge with one O(18)V3Sb tetrahedra,  an edgeedge with one O(23)V3Sb tetrahedra, and  an edgeedge with one O(7)YV2Sb tetrahedra. In the twenty-second O site, O(22) is bonded to one V(10), one V(3), one V(5), and one Si(1) atom to form distorted OV3Si tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(11)V3Si tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra, corners with two equivalent O(27)YV3 trigonal pyramids,  an edgeedge with one O(25)V3Si tetrahedra, and  an edgeedge with one O(6)YV3 trigonal pyramid. In the twenty-third O site, O(23) is bonded to one V(12), one V(13), one V(3), and one Sb(2) atom to form distorted OV3Sb tetrahedra that share  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(24)Y3V tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(18)V3Sb tetrahedra, corners with two equivalent O(7)YV2Sb tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  a cornercorner with one O(27)YV3 trigonal pyramid,  a cornercorner with one O(6)YV3 trigonal pyramid,  an edgeedge with one O(17)V3Sb tetrahedra,  an edgeedge with one O(13)YV2Sb tetrahedra, and  an edgeedge with one O(21)V3Sb trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Y(2), one Y(3), one Y(4), and one V(3) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(22)V3Si tetrahedra,  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(2)Y3V tetrahedra,  a cornercorner with one O(1)YV3 trigonal pyramid, corners with two equivalent O(27)YV3 trigonal pyramids,  an edgeedge with one O(28)Y3V tetrahedra,  an edgeedge with one O(5)Y3V tetrahedra, and  an edgeedge with one O(6)YV3 trigonal pyramid. In the twenty-fifth O site, O(25) is bonded to one V(1), one V(10), one V(5), and one Si(2) atom to form distorted OV3Si tetrahedra that share  a cornercorner with one O(17)V3Sb tetrahedra,  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(5)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid, corners with two equivalent O(6)YV3 trigonal pyramids,  an edgeedge with one O(22)V3Si tetrahedra, and  an edgeedge with one O(27)YV3 trigonal pyramid. In the twenty-sixth O site, O(26) is bonded in a distorted rectangular see-saw-like geometry to one V(11), one V(6), one V(9), and one Sb(1) atom. In the twenty-seventh O site, O(27) is bonded to one Y(3), one V(1), one V(10), and one V(3) atom to form distorted OYV3 trigonal pyramids that share  a cornercorner with one O(18)V3Sb tetrahedra,  a cornercorner with one O(23)V3Sb tetrahedra,  a cornercorner with one O(2)Y3V tetrahedra,  a cornercorner with one O(7)YV2Sb tetrahedra, corners with two equivalent O(22)V3Si tetrahedra, corners with two equivalent O(24)Y3V tetrahedra,  a cornercorner with one O(21)V3Sb trigonal pyramid,  an edgeedge with one O(25)V3Si tetrahedra,  an edgeedge with one O(5)Y3V tetrahedra, and  an edgeedge with one O(6)YV3 trigonal pyramid. In the twenty-eighth O site, O(28) is bonded to one Y(1), one Y(2), one Y(4), and one V(11) atom to form distorted OY3V tetrahedra that share  a cornercorner with one O(13)YV2Sb tetrahedra,  a cornercorner with one O(19)YV2Sb tetrahedra,  a cornercorner with one O(8)YV2Sb tetrahedra, corners with two equivalent O(5)Y3V tetrahedra,  a cornercorner with one O(6)YV3 trigonal pyramid, corners with two equivalent O(12)YV3 trigonal pyramids,  an edgeedge with one O(2)Y3V tetrahedra,  an edgeedge with one O(24)Y3V tetrahedra, and  an edgeedge with one O(1)YV3 trigonal pyramid.