Co5SbO8 is Spinel-like structured and crystallizes in the triclinic P1 space group. There are ten inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(6), one O(8), and one O(9) atom to form CoO4 tetrahedra 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, corners with two equivalent Co(10)O6 octahedra, corners with two equivalent Co(8)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and corners with three equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the second Co site, Co(2) is bonded to one O(12), one O(13), one O(16), and one O(4) atom to form CoO4 tetrahedra 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, corners with two equivalent Co(10)O6 octahedra, corners with two equivalent Co(8)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and corners with three equivalent Co(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the third Co site, Co(3) is bonded to one O(1), one O(11), one O(13), one O(3), one O(7), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Co(6)O4 tetrahedra, corners with two equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the fourth Co site, Co(4) is bonded to one O(11), one O(15), one O(2), one O(3), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with three equivalent Co(1)O4 tetrahedra, corners with three equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(10)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Co(8)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. In the fifth Co site, Co(5) is bonded to one O(1), one O(13), one O(15), one O(3), one O(5), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Co(6)O4 tetrahedra, corners with two equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the sixth Co site, Co(6) is bonded to one O(1), one O(10), one O(5), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(10)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, and corners with three equivalent Co(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. In the seventh Co site, Co(7) is bonded to one O(11), one O(14), one O(15), and one O(3) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(10)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, and corners with three equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the eighth Co site, Co(8) is bonded to one O(10), one O(12), one O(14), one O(2), one O(4), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Co(6)O4 tetrahedra,  a cornercorner with one Co(7)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(10)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. In the ninth Co site, Co(9) is bonded to one O(1), one O(12), one O(16), one O(4), one O(5), and one O(7) atom to form CoO6 octahedra that share corners with three equivalent Co(2)O4 tetrahedra, corners with three equivalent Co(6)O4 tetrahedra,  an edgeedge with one Co(10)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Co(8)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. In the tenth Co site, Co(10) is bonded to one O(10), one O(14), one O(16), one O(2), one O(4), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one Co(6)O4 tetrahedra,  a cornercorner with one Co(7)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(8)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(11), one O(13), one O(15), one O(5), one O(7), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Co(6)O4 tetrahedra, corners with two equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. In the second Sb site, Sb(2) is bonded to one O(10), one O(12), one O(14), one O(16), one O(6), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Co(6)O4 tetrahedra,  a cornercorner with one Co(7)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(10)O6 octahedra, and edges with two equivalent Co(8)O6 octahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Co(3), one Co(5), one Co(6), and one Co(9) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(10), one Co(4), and one Co(8) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(3), one Co(4), one Co(5), and one Co(7) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Co(10), one Co(2), one Co(8), and one Co(9) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Co(5), one Co(6), one Co(9), and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Co(1), one Co(10), one Co(4), and one Sb(2) atom to form distorted corner-sharing OCo3Sb trigonal pyramids. In the seventh O site, O(7) is bonded to one Co(3), one Co(6), one Co(9), and one Sb(1) atom to form distorted corner-sharing OCo3Sb trigonal pyramids. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(8), and one Sb(2) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(3), one Co(5), and one Sb(1) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Co(10), one Co(6), one Co(8), and one Sb(2) atom. In the eleventh O site, O(11) is bonded to one Co(3), one Co(4), one Co(7), and one Sb(1) atom to form distorted corner-sharing OCo3Sb trigonal pyramids. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(8), one Co(9), and one Sb(2) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(5), and one Sb(1) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Co(10), one Co(7), one Co(8), and one Sb(2) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Co(4), one Co(5), one Co(7), and one Sb(1) atom. In the sixteenth O site, O(16) is bonded to one Co(10), one Co(2), one Co(9), and one Sb(2) atom to form distorted corner-sharing OCo3Sb trigonal pyramids.
Co5SbO8 is Spinel-like structured and crystallizes in the triclinic P1 space group. There are ten inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(6), one O(8), and one O(9) atom to form CoO4 tetrahedra 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, corners with two equivalent Co(10)O6 octahedra, corners with two equivalent Co(8)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and corners with three equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. The Co(1)-O(2) bond length is 1.99 Å. The Co(1)-O(6) bond length is 2.01 Å. The Co(1)-O(8) bond length is 2.02 Å. The Co(1)-O(9) bond length is 2.02 Å. In the second Co site, Co(2) is bonded to one O(12), one O(13), one O(16), and one O(4) atom to form CoO4 tetrahedra 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, corners with two equivalent Co(10)O6 octahedra, corners with two equivalent Co(8)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and corners with three equivalent Co(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. The Co(2)-O(12) bond length is 2.02 Å. The Co(2)-O(13) bond length is 2.03 Å. The Co(2)-O(16) bond length is 2.01 Å. The Co(2)-O(4) bond length is 1.98 Å. In the third Co site, Co(3) is bonded to one O(1), one O(11), one O(13), one O(3), one O(7), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Co(6)O4 tetrahedra, corners with two equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The Co(3)-O(1) bond length is 2.10 Å. The Co(3)-O(11) bond length is 2.14 Å. The Co(3)-O(13) bond length is 2.13 Å. The Co(3)-O(3) bond length is 2.09 Å. The Co(3)-O(7) bond length is 2.14 Å. The Co(3)-O(9) bond length is 2.13 Å. In the fourth Co site, Co(4) is bonded to one O(11), one O(15), one O(2), one O(3), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with three equivalent Co(1)O4 tetrahedra, corners with three equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(10)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Co(8)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. The Co(4)-O(11) bond length is 2.12 Å. The Co(4)-O(15) bond length is 2.13 Å. The Co(4)-O(2) bond length is 2.08 Å. The Co(4)-O(3) bond length is 2.09 Å. The Co(4)-O(6) bond length is 2.13 Å. The Co(4)-O(8) bond length is 2.15 Å. In the fifth Co site, Co(5) is bonded to one O(1), one O(13), one O(15), one O(3), one O(5), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Co(6)O4 tetrahedra, corners with two equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The Co(5)-O(1) bond length is 1.91 Å. The Co(5)-O(13) bond length is 2.12 Å. The Co(5)-O(15) bond length is 2.11 Å. The Co(5)-O(3) bond length is 1.93 Å. The Co(5)-O(5) bond length is 2.13 Å. The Co(5)-O(9) bond length is 2.13 Å. In the sixth Co site, Co(6) is bonded to one O(1), one O(10), one O(5), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(10)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, and corners with three equivalent Co(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. The Co(6)-O(1) bond length is 1.99 Å. The Co(6)-O(10) bond length is 2.02 Å. The Co(6)-O(5) bond length is 2.02 Å. The Co(6)-O(7) bond length is 2.01 Å. In the seventh Co site, Co(7) is bonded to one O(11), one O(14), one O(15), and one O(3) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(10)O6 octahedra,  a cornercorner with one Co(8)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(5)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra, and corners with three equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. The Co(7)-O(11) bond length is 2.01 Å. The Co(7)-O(14) bond length is 2.03 Å. The Co(7)-O(15) bond length is 2.02 Å. The Co(7)-O(3) bond length is 1.98 Å. In the eighth Co site, Co(8) is bonded to one O(10), one O(12), one O(14), one O(2), one O(4), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Co(6)O4 tetrahedra,  a cornercorner with one Co(7)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(10)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. The Co(8)-O(10) bond length is 2.12 Å. The Co(8)-O(12) bond length is 2.11 Å. The Co(8)-O(14) bond length is 2.12 Å. The Co(8)-O(2) bond length is 1.91 Å. The Co(8)-O(4) bond length is 1.93 Å. The Co(8)-O(8) bond length is 2.13 Å. In the ninth Co site, Co(9) is bonded to one O(1), one O(12), one O(16), one O(4), one O(5), and one O(7) atom to form CoO6 octahedra that share corners with three equivalent Co(2)O4 tetrahedra, corners with three equivalent Co(6)O4 tetrahedra,  an edgeedge with one Co(10)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Co(8)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. The Co(9)-O(1) bond length is 2.08 Å. The Co(9)-O(12) bond length is 2.13 Å. The Co(9)-O(16) bond length is 2.12 Å. The Co(9)-O(4) bond length is 2.08 Å. The Co(9)-O(5) bond length is 2.15 Å. The Co(9)-O(7) bond length is 2.12 Å. In the tenth Co site, Co(10) is bonded to one O(10), one O(14), one O(16), one O(2), one O(4), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one Co(6)O4 tetrahedra,  a cornercorner with one Co(7)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(8)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. The Co(10)-O(10) bond length is 2.14 Å. The Co(10)-O(14) bond length is 2.14 Å. The Co(10)-O(16) bond length is 2.13 Å. The Co(10)-O(2) bond length is 2.10 Å. The Co(10)-O(4) bond length is 2.09 Å. The Co(10)-O(6) bond length is 2.13 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(11), one O(13), one O(15), one O(5), one O(7), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, corners with two equivalent Co(6)O4 tetrahedra, corners with two equivalent Co(7)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. The Sb(1)-O(11) bond length is 2.01 Å. The Sb(1)-O(13) bond length is 2.03 Å. The Sb(1)-O(15) bond length is 2.03 Å. The Sb(1)-O(5) bond length is 2.02 Å. The Sb(1)-O(7) bond length is 2.01 Å. The Sb(1)-O(9) bond length is 2.03 Å. In the second Sb site, Sb(2) is bonded to one O(10), one O(12), one O(14), one O(16), one O(6), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Co(6)O4 tetrahedra,  a cornercorner with one Co(7)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(9)O6 octahedra, edges with two equivalent Co(10)O6 octahedra, and edges with two equivalent Co(8)O6 octahedra. The Sb(2)-O(10) bond length is 2.02 Å. The Sb(2)-O(12) bond length is 2.03 Å. The Sb(2)-O(14) bond length is 2.03 Å. The Sb(2)-O(16) bond length is 2.01 Å. The Sb(2)-O(6) bond length is 2.01 Å. The Sb(2)-O(8) bond length is 2.02 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Co(3), one Co(5), one Co(6), and one Co(9) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(10), one Co(4), and one Co(8) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(3), one Co(4), one Co(5), and one Co(7) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Co(10), one Co(2), one Co(8), and one Co(9) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Co(5), one Co(6), one Co(9), and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Co(1), one Co(10), one Co(4), and one Sb(2) atom to form distorted corner-sharing OCo3Sb trigonal pyramids. In the seventh O site, O(7) is bonded to one Co(3), one Co(6), one Co(9), and one Sb(1) atom to form distorted corner-sharing OCo3Sb trigonal pyramids. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(8), and one Sb(2) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(3), one Co(5), and one Sb(1) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Co(10), one Co(6), one Co(8), and one Sb(2) atom. In the eleventh O site, O(11) is bonded to one Co(3), one Co(4), one Co(7), and one Sb(1) atom to form distorted corner-sharing OCo3Sb trigonal pyramids. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(8), one Co(9), and one Sb(2) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(5), and one Sb(1) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Co(10), one Co(7), one Co(8), and one Sb(2) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Co(4), one Co(5), one Co(7), and one Sb(1) atom. In the sixteenth O site, O(16) is bonded to one Co(10), one Co(2), one Co(9), and one Sb(2) atom to form distorted corner-sharing OCo3Sb trigonal pyramids.