Co13Al4Si2(SbO14)2 is Aluminum carbonitride-derived structured and crystallizes in the monoclinic C2/m space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(7), one O(8), and two equivalent O(1) atoms to form CoO5 trigonal bipyramids that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with four equivalent Al(1)O4 tetrahedra, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Co(1)O5 trigonal bipyramid, and  an edgeedge with one Co(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 57-63°. In the second Co site, Co(2) is bonded to one O(1), one O(3), one O(6), and two equivalent O(7) atoms to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Co(4)O6 octahedra,  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Al(1)O4 tetrahedra, corners with three equivalent Si(1)O4 tetrahedra,  a cornercorner with one Co(2)O5 trigonal bipyramid, corners with two equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Co(1)O5 trigonal bipyramid, and  an edgeedge with one Co(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-65°. In the third Co site, Co(3) is bonded to two equivalent O(8) and four equivalent O(5) atoms to form CoO6 octahedra that share corners with four equivalent Al(1)O4 tetrahedra, corners with two equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Co(5)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with three equivalent Sb(1)O6 octahedra. In the fourth Co site, Co(4) is bonded to two equivalent O(4) and four equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Co(2)O5 trigonal bipyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. In the fifth Co site, Co(5) is bonded to two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Co(1)O5 trigonal bipyramids, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Al(1) is bonded to one O(1), one O(5), and two equivalent O(2) atoms to form AlO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra,  a cornercorner with one Co(2)O5 trigonal bipyramid, and corners with four equivalent Co(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 56-64°. 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 Co(4)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Co(1)O5 trigonal bipyramids, and corners with six equivalent Co(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-63°. Sb(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms to form SbO6 octahedra that share corners with two equivalent Al(1)O4 tetrahedra, corners with two equivalent Co(1)O5 trigonal bipyramids, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with three equivalent Co(3)O6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Co(2), two equivalent Co(1), and one Al(1) atom to form distorted OAlCo3 tetrahedra that share  a cornercorner with one O(5)AlCo2Sb tetrahedra,  a cornercorner with one O(6)Co3Sb tetrahedra, corners with two equivalent O(8)Co3Sb trigonal pyramids, and  an edgeedge with one O(1)AlCo3 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1) and two equivalent Al(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Co(2) and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Co(4), two equivalent Co(5), and one Si(1) atom. In the fifth O site, O(5) is bonded to two equivalent Co(3), one Al(1), and one Sb(1) atom to form distorted OAlCo2Sb tetrahedra that share  a cornercorner with one O(1)AlCo3 tetrahedra, corners with two equivalent O(6)Co3Sb tetrahedra, corners with three equivalent O(5)AlCo2Sb tetrahedra, corners with four equivalent O(8)Co3Sb trigonal pyramids, edges with two equivalent O(5)AlCo2Sb tetrahedra, and  an edgeedge with one O(8)Co3Sb trigonal pyramid. In the sixth O site, O(6) is bonded to one Co(2), one Co(4), one Co(5), and one Sb(1) atom to form distorted OCo3Sb tetrahedra that share  a cornercorner with one O(1)AlCo3 tetrahedra, corners with two equivalent O(5)AlCo2Sb tetrahedra, corners with three equivalent O(6)Co3Sb tetrahedra, corners with two equivalent O(8)Co3Sb trigonal pyramids,  an edgeedge with one O(6)Co3Sb tetrahedra, and  an edgeedge with one O(8)Co3Sb trigonal pyramid. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Co(2), and one Si(1) atom. In the eighth O site, O(8) is bonded to one Co(1), one Co(3), one Co(5), and one Sb(1) atom to form distorted OCo3Sb trigonal pyramids that share corners with two equivalent O(1)AlCo3 tetrahedra, corners with two equivalent O(6)Co3Sb tetrahedra, corners with four equivalent O(5)AlCo2Sb tetrahedra,  a cornercorner with one O(8)Co3Sb trigonal pyramid,  an edgeedge with one O(5)AlCo2Sb tetrahedra,  an edgeedge with one O(6)Co3Sb tetrahedra, and  an edgeedge with one O(8)Co3Sb trigonal pyramid.
Co13Al4Si2(SbO14)2 is Aluminum carbonitride-derived structured and crystallizes in the monoclinic C2/m space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(7), one O(8), and two equivalent O(1) atoms to form CoO5 trigonal bipyramids that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with four equivalent Al(1)O4 tetrahedra, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Co(1)O5 trigonal bipyramid, and  an edgeedge with one Co(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 57-63°. The Co(1)-O(2) bond length is 2.07 Å. The Co(1)-O(7) bond length is 2.07 Å. The Co(1)-O(8) bond length is 2.03 Å. There is one shorter (2.05 Å) and one longer (2.18 Å) Co(1)-O(1) bond length. In the second Co site, Co(2) is bonded to one O(1), one O(3), one O(6), and two equivalent O(7) atoms to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Co(4)O6 octahedra,  a cornercorner with one Co(5)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Al(1)O4 tetrahedra, corners with three equivalent Si(1)O4 tetrahedra,  a cornercorner with one Co(2)O5 trigonal bipyramid, corners with two equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Co(1)O5 trigonal bipyramid, and  an edgeedge with one Co(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-65°. The Co(2)-O(1) bond length is 1.98 Å. The Co(2)-O(3) bond length is 1.98 Å. The Co(2)-O(6) bond length is 2.02 Å. There is one shorter (2.03 Å) and one longer (2.39 Å) Co(2)-O(7) bond length. In the third Co site, Co(3) is bonded to two equivalent O(8) and four equivalent O(5) atoms to form CoO6 octahedra that share corners with four equivalent Al(1)O4 tetrahedra, corners with two equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Co(5)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with three equivalent Sb(1)O6 octahedra. Both Co(3)-O(8) bond lengths are 2.15 Å. There are two shorter (2.15 Å) and two longer (2.21 Å) Co(3)-O(5) bond lengths. In the fourth Co site, Co(4) is bonded to two equivalent O(4) and four equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with four equivalent Co(2)O5 trigonal bipyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. Both Co(4)-O(4) bond lengths are 2.21 Å. All Co(4)-O(6) bond lengths are 2.18 Å. In the fifth Co site, Co(5) is bonded to two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms to form CoO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Co(1)O5 trigonal bipyramids, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Both Co(5)-O(4) bond lengths are 2.12 Å. Both Co(5)-O(6) bond lengths are 2.11 Å. Both Co(5)-O(8) bond lengths are 2.23 Å. Al(1) is bonded to one O(1), one O(5), and two equivalent O(2) atoms to form AlO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra,  a cornercorner with one Co(2)O5 trigonal bipyramid, and corners with four equivalent Co(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 56-64°. The Al(1)-O(1) bond length is 1.77 Å. The Al(1)-O(5) bond length is 1.84 Å. There is one shorter (1.77 Å) and one longer (1.78 Å) Al(1)-O(2) bond length. 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 Co(4)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Co(1)O5 trigonal bipyramids, and corners with six equivalent Co(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-63°. The Si(1)-O(3) bond length is 1.63 Å. The Si(1)-O(4) bond length is 1.66 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 SbO6 octahedra that share corners with two equivalent Al(1)O4 tetrahedra, corners with two equivalent Co(1)O5 trigonal bipyramids, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with three equivalent Co(3)O6 octahedra. Both Sb(1)-O(5) bond lengths are 2.06 Å. Both Sb(1)-O(6) bond lengths are 2.01 Å. Both Sb(1)-O(8) bond lengths are 2.02 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Co(2), two equivalent Co(1), and one Al(1) atom to form distorted OAlCo3 tetrahedra that share  a cornercorner with one O(5)AlCo2Sb tetrahedra,  a cornercorner with one O(6)Co3Sb tetrahedra, corners with two equivalent O(8)Co3Sb trigonal pyramids, and  an edgeedge with one O(1)AlCo3 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1) and two equivalent Al(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Co(2) and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Co(4), two equivalent Co(5), and one Si(1) atom. In the fifth O site, O(5) is bonded to two equivalent Co(3), one Al(1), and one Sb(1) atom to form distorted OAlCo2Sb tetrahedra that share  a cornercorner with one O(1)AlCo3 tetrahedra, corners with two equivalent O(6)Co3Sb tetrahedra, corners with three equivalent O(5)AlCo2Sb tetrahedra, corners with four equivalent O(8)Co3Sb trigonal pyramids, edges with two equivalent O(5)AlCo2Sb tetrahedra, and  an edgeedge with one O(8)Co3Sb trigonal pyramid. In the sixth O site, O(6) is bonded to one Co(2), one Co(4), one Co(5), and one Sb(1) atom to form distorted OCo3Sb tetrahedra that share  a cornercorner with one O(1)AlCo3 tetrahedra, corners with two equivalent O(5)AlCo2Sb tetrahedra, corners with three equivalent O(6)Co3Sb tetrahedra, corners with two equivalent O(8)Co3Sb trigonal pyramids,  an edgeedge with one O(6)Co3Sb tetrahedra, and  an edgeedge with one O(8)Co3Sb trigonal pyramid. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Co(2), and one Si(1) atom. In the eighth O site, O(8) is bonded to one Co(1), one Co(3), one Co(5), and one Sb(1) atom to form distorted OCo3Sb trigonal pyramids that share corners with two equivalent O(1)AlCo3 tetrahedra, corners with two equivalent O(6)Co3Sb tetrahedra, corners with four equivalent O(5)AlCo2Sb tetrahedra,  a cornercorner with one O(8)Co3Sb trigonal pyramid,  an edgeedge with one O(5)AlCo2Sb tetrahedra,  an edgeedge with one O(6)Co3Sb tetrahedra, and  an edgeedge with one O(8)Co3Sb trigonal pyramid.