Y4Cu13Si2(SbO14)2 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 Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 55°. 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 Sb(1)O6 octahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 56°. 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 Sb(2)O6 octahedra,  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(4)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 56°. 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 Sb(2)O6 octahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Cu(11)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 56°. There are thirteen inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(21), one O(25), one O(27), one O(5), and one O(6) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids,  an edgeedge with one Y(3)O5 trigonal bipyramid, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 52-61°. In the second Cu site, Cu(2) is bonded to one O(1), one O(11), one O(14), and one O(3) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(10)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Cu(11)O5 trigonal bipyramid, and corners with two equivalent Cu(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 52-72°. In the third Cu site, Cu(3) is bonded to one O(22), one O(23), one O(24), one O(27), and one O(6) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(10)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids,  an edgeedge with one Y(4)O5 trigonal bipyramid, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 51-62°. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(11), one O(12), one O(2), and one O(20) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid, and  an edgeedge with one Cu(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 51-63°. In the fifth Cu site, Cu(5) is bonded to one O(16), one O(17), one O(25), and one O(6) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(7)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 51-73°. In the sixth Cu site, Cu(6) is bonded in a distorted see-saw-like geometry to one O(19), one O(20), one O(26), and one O(8) atom. In the seventh Cu site, Cu(7) is bonded to one O(10), one O(12), one O(15), and one O(16) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(5)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid, and corners with two equivalent Cu(11)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 52-73°. In the eighth Cu site, Cu(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 distorted CuO6 octahedra that share  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  an edgeedge with one Sb(1)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent Cu(12)O6 octahedra, and edges with two equivalent Cu(9)O6 octahedra. In the ninth Cu site, Cu(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 distorted CuO6 octahedra that share  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  an edgeedge with one Cu(12)O6 octahedra, edges with two equivalent Cu(8)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the tenth Cu site, Cu(10) is bonded to one O(18), one O(22), one O(27), and one O(3) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid, and corners with two equivalent Cu(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 51-73°. In the eleventh Cu site, Cu(11) is bonded to one O(1), one O(12), one O(15), one O(26), and one O(28) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 51-62°. In the twelfth Cu site, Cu(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 distorted CuO6 octahedra that share  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  an edgeedge with one Cu(9)O6 octahedra, edges with two equivalent Cu(8)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. In the thirteenth Cu site, Cu(13) is bonded in a distorted see-saw-like geometry to one O(13), one O(21), one O(23), and one O(7) atom. 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 Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra, corners with two equivalent Cu(10)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and  a cornercorner with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 63°. 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 Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra, corners with two equivalent Cu(5)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid, and  a cornercorner with one Cu(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 63-64°. 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 SbO6 octahedra that share  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  an edgeedge with one Cu(8)O6 octahedra, and edges with two equivalent Cu(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 SbO6 octahedra that share  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  an edgeedge with one Cu(8)O6 octahedra, and edges with two equivalent Cu(12)O6 octahedra. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(2), one Cu(11), one Cu(2), and one Cu(4) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(14)Cu3Sb tetrahedra and  an edgeedge with one O(12)YCu3 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Y(1), one Y(2), one Y(3), and one Cu(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(10), one Cu(2), and one Si(1) atom. In the fourth O site, O(4) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(1) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(9)Cu3Si tetrahedra, corners with two equivalent O(14)Cu3Sb tetrahedra, corners with two equivalent O(18)Cu3Sb tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Y(1), one Y(3), one Y(4), and one Cu(1) atom. In the sixth O site, O(6) is bonded to one Y(4), one Cu(1), one Cu(3), and one Cu(5) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(17)Cu3Sb tetrahedra and  an edgeedge with one O(27)YCu3 tetrahedra. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Y(3), one Cu(13), and one Sb(2) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Y(1), one Cu(6), and one Sb(1) atom. In the ninth O site, O(9) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(2) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(4)Cu3Si tetrahedra, corners with two equivalent O(10)Cu3Sb tetrahedra, corners with two equivalent O(17)Cu3Sb tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the tenth O site, O(10) is bonded to one Cu(7), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra,  a cornercorner with one O(12)YCu3 tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Cu(2), one Cu(4), and one Si(1) atom. In the twelfth O site, O(12) is bonded to one Y(1), one Cu(11), one Cu(4), and one Cu(7) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra and  an edgeedge with one O(1)YCu3 tetrahedra. In the thirteenth O site, O(13) is bonded in a trigonal non-coplanar geometry to one Y(4), one Cu(13), and one Sb(2) atom. In the fourteenth O site, O(14) is bonded to one Cu(2), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra,  a cornercorner with one O(1)YCu3 tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Cu(11), one Cu(7), and one Si(2) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Cu(5), one Cu(7), and one Si(2) atom. In the seventeenth O site, O(17) is bonded to one Cu(12), one Cu(5), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra,  a cornercorner with one O(6)YCu3 tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eighteenth O site, O(18) is bonded to one Cu(10), one Cu(12), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(27)YCu3 tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the nineteenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one Y(2), one Cu(6), and one Sb(1) atom. In the twentieth O site, O(20) is bonded in a rectangular see-saw-like geometry to one Cu(4), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-first O site, O(21) is bonded in a rectangular see-saw-like geometry to one Cu(1), one Cu(12), one Cu(13), and one Sb(2) atom. In the twenty-second O site, O(22) is bonded in a trigonal planar geometry to one Cu(10), one Cu(3), and one Si(1) atom. In the twenty-third O site, O(23) is bonded in a rectangular see-saw-like geometry to one Cu(12), one Cu(13), one Cu(3), and one Sb(2) atom. In the twenty-fourth O site, O(24) is bonded in a distorted rectangular see-saw-like geometry to one Y(2), one Y(3), one Y(4), and one Cu(3) atom. In the twenty-fifth O site, O(25) is bonded in a trigonal planar geometry to one Cu(1), one Cu(5), and one Si(2) atom. In the twenty-sixth O site, O(26) is bonded in a rectangular see-saw-like geometry to one Cu(11), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-seventh O site, O(27) is bonded to one Y(3), one Cu(1), one Cu(10), and one Cu(3) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(18)Cu3Sb tetrahedra and  an edgeedge with one O(6)YCu3 tetrahedra. In the twenty-eighth O site, O(28) is bonded in a distorted rectangular see-saw-like geometry to one Y(1), one Y(2), one Y(4), and one Cu(11) atom.
Y4Cu13Si2(SbO14)2 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 Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 55°. The Y(1)-O(12) bond length is 2.16 Å. The Y(1)-O(2) bond length is 2.38 Å. The Y(1)-O(28) bond length is 2.17 Å. The Y(1)-O(5) bond length is 2.23 Å. The Y(1)-O(8) bond length is 2.21 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 Sb(1)O6 octahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 56°. The Y(2)-O(1) bond length is 2.16 Å. The Y(2)-O(19) bond length is 2.21 Å. The Y(2)-O(2) bond length is 2.17 Å. The Y(2)-O(24) bond length is 2.23 Å. The Y(2)-O(28) bond length is 2.39 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 Sb(2)O6 octahedra,  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(4)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 56°. The Y(3)-O(2) bond length is 2.22 Å. The Y(3)-O(24) bond length is 2.17 Å. The Y(3)-O(27) bond length is 2.18 Å. The Y(3)-O(5) bond length is 2.39 Å. The Y(3)-O(7) bond length is 2.20 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 Sb(2)O6 octahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Cu(11)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent Cu(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 Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 56°. The Y(4)-O(13) bond length is 2.21 Å. The Y(4)-O(24) bond length is 2.38 Å. The Y(4)-O(28) bond length is 2.22 Å. The Y(4)-O(5) bond length is 2.17 Å. The Y(4)-O(6) bond length is 2.17 Å. There are thirteen inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(21), one O(25), one O(27), one O(5), and one O(6) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid, corners with two equivalent Y(4)O5 trigonal bipyramids,  an edgeedge with one Y(3)O5 trigonal bipyramid, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 52-61°. The Cu(1)-O(21) bond length is 1.96 Å. The Cu(1)-O(25) bond length is 2.00 Å. The Cu(1)-O(27) bond length is 1.98 Å. The Cu(1)-O(5) bond length is 2.12 Å. The Cu(1)-O(6) bond length is 2.09 Å. In the second Cu site, Cu(2) is bonded to one O(1), one O(11), one O(14), and one O(3) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(10)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Cu(11)O5 trigonal bipyramid, and corners with two equivalent Cu(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 52-72°. The Cu(2)-O(1) bond length is 1.92 Å. The Cu(2)-O(11) bond length is 1.95 Å. The Cu(2)-O(14) bond length is 2.03 Å. The Cu(2)-O(3) bond length is 1.92 Å. In the third Cu site, Cu(3) is bonded to one O(22), one O(23), one O(24), one O(27), and one O(6) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(10)O4 tetrahedra,  a cornercorner with one Y(2)O5 trigonal bipyramid, corners with two equivalent Y(3)O5 trigonal bipyramids,  an edgeedge with one Y(4)O5 trigonal bipyramid, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 51-62°. The Cu(3)-O(22) bond length is 2.00 Å. The Cu(3)-O(23) bond length is 1.96 Å. The Cu(3)-O(24) bond length is 2.15 Å. The Cu(3)-O(27) bond length is 2.09 Å. The Cu(3)-O(6) bond length is 1.99 Å. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(11), one O(12), one O(2), and one O(20) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid, corners with two equivalent Y(2)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid, and  an edgeedge with one Cu(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 51-63°. The Cu(4)-O(1) bond length is 2.11 Å. The Cu(4)-O(11) bond length is 1.99 Å. The Cu(4)-O(12) bond length is 1.99 Å. The Cu(4)-O(2) bond length is 2.15 Å. The Cu(4)-O(20) bond length is 1.97 Å. In the fifth Cu site, Cu(5) is bonded to one O(16), one O(17), one O(25), and one O(6) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(7)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 51-73°. The Cu(5)-O(16) bond length is 1.92 Å. The Cu(5)-O(17) bond length is 2.04 Å. The Cu(5)-O(25) bond length is 1.95 Å. The Cu(5)-O(6) bond length is 1.92 Å. In the sixth Cu site, Cu(6) is bonded in a distorted see-saw-like geometry to one O(19), one O(20), one O(26), and one O(8) atom. The Cu(6)-O(19) bond length is 1.90 Å. The Cu(6)-O(20) bond length is 2.18 Å. The Cu(6)-O(26) bond length is 2.19 Å. The Cu(6)-O(8) bond length is 1.90 Å. In the seventh Cu site, Cu(7) is bonded to one O(10), one O(12), one O(15), and one O(16) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(5)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid, and corners with two equivalent Cu(11)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 52-73°. The Cu(7)-O(10) bond length is 2.04 Å. The Cu(7)-O(12) bond length is 1.92 Å. The Cu(7)-O(15) bond length is 1.95 Å. The Cu(7)-O(16) bond length is 1.92 Å. In the eighth Cu site, Cu(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 distorted CuO6 octahedra that share  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  an edgeedge with one Sb(1)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent Cu(12)O6 octahedra, and edges with two equivalent Cu(9)O6 octahedra. The Cu(8)-O(10) bond length is 2.28 Å. The Cu(8)-O(14) bond length is 2.29 Å. The Cu(8)-O(17) bond length is 2.30 Å. The Cu(8)-O(18) bond length is 2.32 Å. The Cu(8)-O(4) bond length is 1.95 Å. The Cu(8)-O(9) bond length is 1.95 Å. In the ninth Cu site, Cu(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 distorted CuO6 octahedra that share  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  an edgeedge with one Cu(12)O6 octahedra, edges with two equivalent Cu(8)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The Cu(9)-O(10) bond length is 1.95 Å. The Cu(9)-O(14) bond length is 1.95 Å. The Cu(9)-O(20) bond length is 2.44 Å. The Cu(9)-O(26) bond length is 2.39 Å. The Cu(9)-O(4) bond length is 2.27 Å. The Cu(9)-O(9) bond length is 2.27 Å. In the tenth Cu site, Cu(10) is bonded to one O(18), one O(22), one O(27), and one O(3) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Cu(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid, and corners with two equivalent Cu(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 51-73°. The Cu(10)-O(18) bond length is 2.02 Å. The Cu(10)-O(22) bond length is 1.96 Å. The Cu(10)-O(27) bond length is 1.92 Å. The Cu(10)-O(3) bond length is 1.93 Å. In the eleventh Cu site, Cu(11) is bonded to one O(1), one O(12), one O(15), one O(26), and one O(28) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra,  a cornercorner with one Y(4)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids,  an edgeedge with one Y(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 51-62°. The Cu(11)-O(1) bond length is 1.99 Å. The Cu(11)-O(12) bond length is 2.10 Å. The Cu(11)-O(15) bond length is 1.99 Å. The Cu(11)-O(26) bond length is 1.97 Å. The Cu(11)-O(28) bond length is 2.14 Å. In the twelfth Cu site, Cu(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 distorted CuO6 octahedra that share  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  an edgeedge with one Cu(9)O6 octahedra, edges with two equivalent Cu(8)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. The Cu(12)-O(17) bond length is 1.95 Å. The Cu(12)-O(18) bond length is 1.95 Å. The Cu(12)-O(21) bond length is 2.35 Å. The Cu(12)-O(23) bond length is 2.42 Å. The Cu(12)-O(4) bond length is 2.28 Å. The Cu(12)-O(9) bond length is 2.26 Å. In the thirteenth Cu site, Cu(13) is bonded in a distorted see-saw-like geometry to one O(13), one O(21), one O(23), and one O(7) atom. The Cu(13)-O(13) bond length is 1.90 Å. The Cu(13)-O(21) bond length is 2.24 Å. The Cu(13)-O(23) bond length is 2.17 Å. The Cu(13)-O(7) bond length is 1.91 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 Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra, corners with two equivalent Cu(10)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and  a cornercorner with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 63°. The Si(1)-O(11) bond length is 1.64 Å. The Si(1)-O(22) bond length is 1.64 Å. The Si(1)-O(3) bond length is 1.64 Å. The Si(1)-O(4) bond length is 1.65 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 Cu(12)O6 octahedra,  a cornercorner with one Cu(8)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra, corners with two equivalent Cu(5)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid, and  a cornercorner with one Cu(11)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 63-64°. The Si(2)-O(15) bond length is 1.64 Å. The Si(2)-O(16) bond length is 1.64 Å. The Si(2)-O(25) bond length is 1.64 Å. The Si(2)-O(9) bond length is 1.65 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 SbO6 octahedra that share  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Y(2)O5 trigonal bipyramid,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  an edgeedge with one Cu(8)O6 octahedra, and edges with two equivalent Cu(9)O6 octahedra. The Sb(1)-O(10) bond length is 2.06 Å. The Sb(1)-O(14) bond length is 2.05 Å. The Sb(1)-O(19) bond length is 2.03 Å. The Sb(1)-O(20) bond length is 2.03 Å. The Sb(1)-O(26) bond length is 2.03 Å. The Sb(1)-O(8) bond length is 2.02 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 SbO6 octahedra that share  a cornercorner with one Cu(10)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one Y(3)O5 trigonal bipyramid,  a cornercorner with one Y(4)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  an edgeedge with one Cu(8)O6 octahedra, and edges with two equivalent Cu(12)O6 octahedra. The Sb(2)-O(13) bond length is 2.02 Å. The Sb(2)-O(17) bond length is 2.05 Å. The Sb(2)-O(18) bond length is 2.05 Å. The Sb(2)-O(21) bond length is 2.04 Å. The Sb(2)-O(23) bond length is 2.04 Å. The Sb(2)-O(7) bond length is 2.02 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(2), one Cu(11), one Cu(2), and one Cu(4) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(14)Cu3Sb tetrahedra and  an edgeedge with one O(12)YCu3 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Y(1), one Y(2), one Y(3), and one Cu(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(10), one Cu(2), and one Si(1) atom. In the fourth O site, O(4) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(1) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(9)Cu3Si tetrahedra, corners with two equivalent O(14)Cu3Sb tetrahedra, corners with two equivalent O(18)Cu3Sb tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Y(1), one Y(3), one Y(4), and one Cu(1) atom. In the sixth O site, O(6) is bonded to one Y(4), one Cu(1), one Cu(3), and one Cu(5) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(17)Cu3Sb tetrahedra and  an edgeedge with one O(27)YCu3 tetrahedra. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Y(3), one Cu(13), and one Sb(2) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Y(1), one Cu(6), and one Sb(1) atom. In the ninth O site, O(9) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(2) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(4)Cu3Si tetrahedra, corners with two equivalent O(10)Cu3Sb tetrahedra, corners with two equivalent O(17)Cu3Sb tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the tenth O site, O(10) is bonded to one Cu(7), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra,  a cornercorner with one O(12)YCu3 tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Cu(2), one Cu(4), and one Si(1) atom. In the twelfth O site, O(12) is bonded to one Y(1), one Cu(11), one Cu(4), and one Cu(7) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra and  an edgeedge with one O(1)YCu3 tetrahedra. In the thirteenth O site, O(13) is bonded in a trigonal non-coplanar geometry to one Y(4), one Cu(13), and one Sb(2) atom. In the fourteenth O site, O(14) is bonded to one Cu(2), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra,  a cornercorner with one O(1)YCu3 tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Cu(11), one Cu(7), and one Si(2) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Cu(5), one Cu(7), and one Si(2) atom. In the seventeenth O site, O(17) is bonded to one Cu(12), one Cu(5), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra,  a cornercorner with one O(6)YCu3 tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eighteenth O site, O(18) is bonded to one Cu(10), one Cu(12), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(27)YCu3 tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the nineteenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one Y(2), one Cu(6), and one Sb(1) atom. In the twentieth O site, O(20) is bonded in a rectangular see-saw-like geometry to one Cu(4), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-first O site, O(21) is bonded in a rectangular see-saw-like geometry to one Cu(1), one Cu(12), one Cu(13), and one Sb(2) atom. In the twenty-second O site, O(22) is bonded in a trigonal planar geometry to one Cu(10), one Cu(3), and one Si(1) atom. In the twenty-third O site, O(23) is bonded in a rectangular see-saw-like geometry to one Cu(12), one Cu(13), one Cu(3), and one Sb(2) atom. In the twenty-fourth O site, O(24) is bonded in a distorted rectangular see-saw-like geometry to one Y(2), one Y(3), one Y(4), and one Cu(3) atom. In the twenty-fifth O site, O(25) is bonded in a trigonal planar geometry to one Cu(1), one Cu(5), and one Si(2) atom. In the twenty-sixth O site, O(26) is bonded in a rectangular see-saw-like geometry to one Cu(11), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-seventh O site, O(27) is bonded to one Y(3), one Cu(1), one Cu(10), and one Cu(3) atom to form OYCu3 tetrahedra that share  a cornercorner with one O(18)Cu3Sb tetrahedra and  an edgeedge with one O(6)YCu3 tetrahedra. In the twenty-eighth O site, O(28) is bonded in a distorted rectangular see-saw-like geometry to one Y(1), one Y(2), one Y(4), and one Cu(11) atom.