Y4Cr13Si2(SbO14)2 is Aluminum carbonitride-derived structured and crystallizes in the monoclinic C2/m space group. Y(1) is bonded to one O(1), one O(5), and three equivalent O(2) atoms to form distorted YO5 trigonal bipyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with three equivalent Cr(1)O5 trigonal bipyramids,  an edgeedge with one Cr(1)O5 trigonal bipyramid, and edges with two equivalent Y(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 67°. There are five inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), one O(7), one O(8), and two equivalent O(1) atoms to form CrO5 trigonal bipyramids that share  a cornercorner with one Cr(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cr(2)O5 trigonal bipyramids, corners with three equivalent Y(1)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one Cr(1)O5 trigonal bipyramid, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-66°. In the second Cr site, Cr(2) is bonded to one O(1), one O(3), one O(6), and two equivalent O(7) atoms to form CrO5 trigonal bipyramids that share  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Cr(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Cr(1)O5 trigonal bipyramids,  an edgeedge with one Cr(1)O5 trigonal bipyramid, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-66°. In the third Cr site, Cr(3) is bonded in a 6-coordinate geometry to two equivalent O(8) and four equivalent O(5) atoms. In the fourth Cr site, Cr(4) is bonded to two equivalent O(4) and four equivalent O(6) atoms to form distorted CrO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Cr(2)O5 trigonal bipyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Cr(5)O6 octahedra. In the fifth Cr site, Cr(5) is bonded to two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms to form CrO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, corners with two equivalent Cr(2)O5 trigonal bipyramids,  an edgeedge with one Cr(5)O6 octahedra, edges with two equivalent Cr(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Si(1) is bonded to one O(3), one O(4), and two equivalent O(7) atoms to form SiO4 tetrahedra that share  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, and corners with six equivalent Cr(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 55-75°. Sb(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms to form distorted SbO6 octahedra that share corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent Cr(1)O5 trigonal bipyramids, corners with two equivalent Cr(2)O5 trigonal bipyramids,  an edgeedge with one Cr(4)O6 octahedra, and edges with two equivalent Cr(5)O6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(1), one Cr(2), and two equivalent Cr(1) atoms to form OYCr3 tetrahedra that share  a cornercorner with one O(6)Cr3Sb tetrahedra,  a cornercorner with one O(5)YCr2Sb tetrahedra, corners with two equivalent O(8)Cr3Sb tetrahedra, corners with two equivalent O(7)Cr3Si tetrahedra, corners with three equivalent O(2)Y3Cr trigonal pyramids,  an edgeedge with one O(7)Cr3Si tetrahedra,  an edgeedge with one O(1)YCr3 tetrahedra, and  an edgeedge with one O(2)Y3Cr trigonal pyramid. In the second O site, O(2) is bonded to three equivalent Y(1) and one Cr(1) atom to form OY3Cr trigonal pyramids that share  a cornercorner with one O(8)Cr3Sb tetrahedra,  a cornercorner with one O(7)Cr3Si tetrahedra, corners with three equivalent O(5)YCr2Sb tetrahedra, corners with three equivalent O(1)YCr3 tetrahedra, corners with two equivalent O(2)Y3Cr trigonal pyramids,  an edgeedge with one O(1)YCr3 tetrahedra, and edges with two equivalent O(2)Y3Cr trigonal pyramids. In the third O site, O(3) is bonded in a distorted T-shaped geometry to two equivalent Cr(2) and one Si(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Cr(4), two equivalent Cr(5), and one Si(1) atom. In the fifth O site, O(5) is bonded to one Y(1), two equivalent Cr(3), and one Sb(1) atom to form OYCr2Sb tetrahedra that share  a cornercorner with one O(1)YCr3 tetrahedra, corners with two equivalent O(6)Cr3Sb tetrahedra, corners with three equivalent O(5)YCr2Sb tetrahedra, corners with four equivalent O(8)Cr3Sb tetrahedra, corners with three equivalent O(2)Y3Cr trigonal pyramids,  an edgeedge with one O(8)Cr3Sb tetrahedra, and edges with two equivalent O(5)YCr2Sb tetrahedra. In the sixth O site, O(6) is bonded to one Cr(2), one Cr(4), one Cr(5), and one Sb(1) atom to form distorted OCr3Sb tetrahedra that share  a cornercorner with one O(1)YCr3 tetrahedra, corners with two equivalent O(8)Cr3Sb tetrahedra, corners with two equivalent O(7)Cr3Si tetrahedra, corners with two equivalent O(5)YCr2Sb tetrahedra, corners with three equivalent O(6)Cr3Sb tetrahedra,  an edgeedge with one O(6)Cr3Sb tetrahedra, and  an edgeedge with one O(8)Cr3Sb tetrahedra. In the seventh O site, O(7) is bonded to one Cr(1), two equivalent Cr(2), and one Si(1) atom to form distorted OCr3Si tetrahedra that share  a cornercorner with one O(8)Cr3Sb tetrahedra,  a cornercorner with one O(7)Cr3Si tetrahedra, corners with two equivalent O(6)Cr3Sb tetrahedra, corners with two equivalent O(1)YCr3 tetrahedra,  a cornercorner with one O(2)Y3Cr trigonal pyramid,  an edgeedge with one O(7)Cr3Si tetrahedra, and  an edgeedge with one O(1)YCr3 tetrahedra. In the eighth O site, O(8) is bonded to one Cr(1), one Cr(3), one Cr(5), and one Sb(1) atom to form distorted OCr3Sb tetrahedra that share  a cornercorner with one O(8)Cr3Sb tetrahedra,  a cornercorner with one O(7)Cr3Si tetrahedra, corners with two equivalent O(6)Cr3Sb tetrahedra, corners with two equivalent O(1)YCr3 tetrahedra, corners with four equivalent O(5)YCr2Sb tetrahedra,  a cornercorner with one O(2)Y3Cr trigonal pyramid,  an edgeedge with one O(6)Cr3Sb tetrahedra,  an edgeedge with one O(8)Cr3Sb tetrahedra, and  an edgeedge with one O(5)YCr2Sb tetrahedra.
Y4Cr13Si2(SbO14)2 is Aluminum carbonitride-derived structured and crystallizes in the monoclinic C2/m space group. Y(1) is bonded to one O(1), one O(5), and three equivalent O(2) atoms to form distorted YO5 trigonal bipyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Y(1)O5 trigonal bipyramids, corners with three equivalent Cr(1)O5 trigonal bipyramids,  an edgeedge with one Cr(1)O5 trigonal bipyramid, and edges with two equivalent Y(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 67°. The Y(1)-O(1) bond length is 2.15 Å. The Y(1)-O(5) bond length is 2.14 Å. There are a spread of Y(1)-O(2) bond distances ranging from 2.18-2.41 Å. There are five inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), one O(7), one O(8), and two equivalent O(1) atoms to form CrO5 trigonal bipyramids that share  a cornercorner with one Cr(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cr(2)O5 trigonal bipyramids, corners with three equivalent Y(1)O5 trigonal bipyramids,  an edgeedge with one Y(1)O5 trigonal bipyramid,  an edgeedge with one Cr(1)O5 trigonal bipyramid, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-66°. The Cr(1)-O(2) bond length is 2.09 Å. The Cr(1)-O(7) bond length is 2.11 Å. The Cr(1)-O(8) bond length is 2.04 Å. There is one shorter (2.12 Å) and one longer (2.28 Å) Cr(1)-O(1) bond length. In the second Cr site, Cr(2) is bonded to one O(1), one O(3), one O(6), and two equivalent O(7) atoms to form CrO5 trigonal bipyramids that share  a cornercorner with one Cr(4)O6 octahedra,  a cornercorner with one Cr(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  a cornercorner with one Y(1)O5 trigonal bipyramid,  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Cr(1)O5 trigonal bipyramids,  an edgeedge with one Cr(1)O5 trigonal bipyramid, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-66°. The Cr(2)-O(1) bond length is 2.01 Å. The Cr(2)-O(3) bond length is 2.03 Å. The Cr(2)-O(6) bond length is 1.99 Å. There is one shorter (2.21 Å) and one longer (2.22 Å) Cr(2)-O(7) bond length. In the third Cr site, Cr(3) is bonded in a 6-coordinate geometry to two equivalent O(8) and four equivalent O(5) atoms. Both Cr(3)-O(8) bond lengths are 2.37 Å. There are two shorter (2.05 Å) and two longer (2.56 Å) Cr(3)-O(5) bond lengths. In the fourth Cr site, Cr(4) is bonded to two equivalent O(4) and four equivalent O(6) atoms to form distorted CrO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Cr(2)O5 trigonal bipyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Cr(5)O6 octahedra. Both Cr(4)-O(4) bond lengths are 2.54 Å. All Cr(4)-O(6) bond lengths are 2.19 Å. In the fifth Cr site, Cr(5) is bonded to two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms to form CrO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, corners with two equivalent Cr(2)O5 trigonal bipyramids,  an edgeedge with one Cr(5)O6 octahedra, edges with two equivalent Cr(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Both Cr(5)-O(4) bond lengths are 2.15 Å. Both Cr(5)-O(6) bond lengths are 2.06 Å. Both Cr(5)-O(8) bond lengths are 2.05 Å. Si(1) is bonded to one O(3), one O(4), and two equivalent O(7) atoms to form SiO4 tetrahedra that share  a cornercorner with one Cr(4)O6 octahedra, corners with two equivalent Cr(5)O6 octahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, and corners with six equivalent Cr(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 55-75°. The Si(1)-O(3) bond length is 1.64 Å. The Si(1)-O(4) bond length is 1.64 Å. Both Si(1)-O(7) bond lengths are 1.66 Å. Sb(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms to form distorted SbO6 octahedra that share corners with two equivalent Y(1)O5 trigonal bipyramids, corners with two equivalent Cr(1)O5 trigonal bipyramids, corners with two equivalent Cr(2)O5 trigonal bipyramids,  an edgeedge with one Cr(4)O6 octahedra, and edges with two equivalent Cr(5)O6 octahedra. Both Sb(1)-O(5) bond lengths are 2.20 Å. Both Sb(1)-O(6) bond lengths are 2.43 Å. Both Sb(1)-O(8) bond lengths are 2.38 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(1), one Cr(2), and two equivalent Cr(1) atoms to form OYCr3 tetrahedra that share  a cornercorner with one O(6)Cr3Sb tetrahedra,  a cornercorner with one O(5)YCr2Sb tetrahedra, corners with two equivalent O(8)Cr3Sb tetrahedra, corners with two equivalent O(7)Cr3Si tetrahedra, corners with three equivalent O(2)Y3Cr trigonal pyramids,  an edgeedge with one O(7)Cr3Si tetrahedra,  an edgeedge with one O(1)YCr3 tetrahedra, and  an edgeedge with one O(2)Y3Cr trigonal pyramid. In the second O site, O(2) is bonded to three equivalent Y(1) and one Cr(1) atom to form OY3Cr trigonal pyramids that share  a cornercorner with one O(8)Cr3Sb tetrahedra,  a cornercorner with one O(7)Cr3Si tetrahedra, corners with three equivalent O(5)YCr2Sb tetrahedra, corners with three equivalent O(1)YCr3 tetrahedra, corners with two equivalent O(2)Y3Cr trigonal pyramids,  an edgeedge with one O(1)YCr3 tetrahedra, and edges with two equivalent O(2)Y3Cr trigonal pyramids. In the third O site, O(3) is bonded in a distorted T-shaped geometry to two equivalent Cr(2) and one Si(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Cr(4), two equivalent Cr(5), and one Si(1) atom. In the fifth O site, O(5) is bonded to one Y(1), two equivalent Cr(3), and one Sb(1) atom to form OYCr2Sb tetrahedra that share  a cornercorner with one O(1)YCr3 tetrahedra, corners with two equivalent O(6)Cr3Sb tetrahedra, corners with three equivalent O(5)YCr2Sb tetrahedra, corners with four equivalent O(8)Cr3Sb tetrahedra, corners with three equivalent O(2)Y3Cr trigonal pyramids,  an edgeedge with one O(8)Cr3Sb tetrahedra, and edges with two equivalent O(5)YCr2Sb tetrahedra. In the sixth O site, O(6) is bonded to one Cr(2), one Cr(4), one Cr(5), and one Sb(1) atom to form distorted OCr3Sb tetrahedra that share  a cornercorner with one O(1)YCr3 tetrahedra, corners with two equivalent O(8)Cr3Sb tetrahedra, corners with two equivalent O(7)Cr3Si tetrahedra, corners with two equivalent O(5)YCr2Sb tetrahedra, corners with three equivalent O(6)Cr3Sb tetrahedra,  an edgeedge with one O(6)Cr3Sb tetrahedra, and  an edgeedge with one O(8)Cr3Sb tetrahedra. In the seventh O site, O(7) is bonded to one Cr(1), two equivalent Cr(2), and one Si(1) atom to form distorted OCr3Si tetrahedra that share  a cornercorner with one O(8)Cr3Sb tetrahedra,  a cornercorner with one O(7)Cr3Si tetrahedra, corners with two equivalent O(6)Cr3Sb tetrahedra, corners with two equivalent O(1)YCr3 tetrahedra,  a cornercorner with one O(2)Y3Cr trigonal pyramid,  an edgeedge with one O(7)Cr3Si tetrahedra, and  an edgeedge with one O(1)YCr3 tetrahedra. In the eighth O site, O(8) is bonded to one Cr(1), one Cr(3), one Cr(5), and one Sb(1) atom to form distorted OCr3Sb tetrahedra that share  a cornercorner with one O(8)Cr3Sb tetrahedra,  a cornercorner with one O(7)Cr3Si tetrahedra, corners with two equivalent O(6)Cr3Sb tetrahedra, corners with two equivalent O(1)YCr3 tetrahedra, corners with four equivalent O(5)YCr2Sb tetrahedra,  a cornercorner with one O(2)Y3Cr trigonal pyramid,  an edgeedge with one O(6)Cr3Sb tetrahedra,  an edgeedge with one O(8)Cr3Sb tetrahedra, and  an edgeedge with one O(5)YCr2Sb tetrahedra.