CaCo5SbO8 crystallizes in the triclinic P1 space group. Ca(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form CaO6 octahedra that share corners with six equivalent Co(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-13°. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with six equivalent Co(2)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-14°. In the second Co site, Co(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with six equivalent Co(1)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-14°. In the third Co site, Co(3) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with six equivalent Co(5)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. In the fourth Co site, Co(4) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form CoO6 octahedra that share corners with six equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-13°. In the fifth Co site, Co(5) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with six equivalent Co(3)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. Sb(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form SbO6 octahedra that share edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Co(3), one Co(4), one Co(5), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(8)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid. In the second O site, O(2) is bonded to one Co(1), one Co(2), one Co(3), one Co(5), and one Sb(1) atom to form OCo4Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid, corners with five equivalent O(6)Co4Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid, and  an edgeedge with one O(8)CaCo3Sb square pyramid. In the third O site, O(3) is bonded to one Ca(1), one Co(1), one Co(2), one Co(4), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(7)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(8)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid. In the fourth O site, O(4) is bonded to one Ca(1), one Co(1), one Co(2), one Co(3), one Co(4), and one Co(5) atom to form OCaCo5 octahedra that share corners with six equivalent O(5)CaCo5 octahedra, edges with two equivalent O(1)CaCo3Sb square pyramids, edges with two equivalent O(3)CaCo3Sb square pyramids, edges with two equivalent O(7)CaCo3Sb square pyramids, edges with two equivalent O(8)CaCo3Sb square pyramids, edges with two equivalent O(2)Co4Sb square pyramids, and edges with two equivalent O(6)Co4Sb square pyramids. The corner-sharing octahedral tilt angles range from 0-6°. In the fifth O site, O(5) is bonded to one Ca(1), one Co(1), one Co(2), one Co(3), one Co(4), and one Co(5) atom to form OCaCo5 octahedra that share corners with six equivalent O(4)CaCo5 octahedra, edges with two equivalent O(1)CaCo3Sb square pyramids, edges with two equivalent O(3)CaCo3Sb square pyramids, edges with two equivalent O(7)CaCo3Sb square pyramids, edges with two equivalent O(8)CaCo3Sb square pyramids, edges with two equivalent O(2)Co4Sb square pyramids, and edges with two equivalent O(6)Co4Sb square pyramids. The corner-sharing octahedral tilt angles range from 0-6°. In the sixth O site, O(6) is bonded to one Co(1), one Co(2), one Co(3), one Co(5), and one Sb(1) atom to form OCo4Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid, corners with five equivalent O(2)Co4Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid, and  an edgeedge with one O(8)CaCo3Sb square pyramid. In the seventh O site, O(7) is bonded to one Ca(1), one Co(1), one Co(2), one Co(4), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(3)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(8)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid. In the eighth O site, O(8) is bonded to one Ca(1), one Co(3), one Co(4), one Co(5), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(1)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid.
CaCo5SbO8 crystallizes in the triclinic P1 space group. Ca(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form CaO6 octahedra that share corners with six equivalent Co(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-13°. The Ca(1)-O(1) bond length is 2.34 Å. The Ca(1)-O(3) bond length is 2.34 Å. The Ca(1)-O(4) bond length is 2.38 Å. The Ca(1)-O(5) bond length is 2.30 Å. The Ca(1)-O(7) bond length is 2.28 Å. The Ca(1)-O(8) bond length is 2.28 Å. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with six equivalent Co(2)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-14°. The Co(1)-O(2) bond length is 2.17 Å. The Co(1)-O(3) bond length is 2.22 Å. The Co(1)-O(4) bond length is 2.21 Å. The Co(1)-O(5) bond length is 2.38 Å. The Co(1)-O(6) bond length is 2.30 Å. The Co(1)-O(7) bond length is 2.29 Å. In the second Co site, Co(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with six equivalent Co(1)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-14°. The Co(2)-O(2) bond length is 2.23 Å. The Co(2)-O(3) bond length is 2.22 Å. The Co(2)-O(4) bond length is 2.15 Å. The Co(2)-O(5) bond length is 2.13 Å. The Co(2)-O(6) bond length is 2.22 Å. The Co(2)-O(7) bond length is 2.25 Å. In the third Co site, Co(3) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with six equivalent Co(5)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. The Co(3)-O(1) bond length is 2.21 Å. The Co(3)-O(2) bond length is 2.23 Å. The Co(3)-O(4) bond length is 2.15 Å. The Co(3)-O(5) bond length is 2.13 Å. The Co(3)-O(6) bond length is 2.23 Å. The Co(3)-O(8) bond length is 2.23 Å. In the fourth Co site, Co(4) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form CoO6 octahedra that share corners with six equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-13°. The Co(4)-O(1) bond length is 2.15 Å. The Co(4)-O(3) bond length is 2.14 Å. The Co(4)-O(4) bond length is 2.16 Å. The Co(4)-O(5) bond length is 2.11 Å. The Co(4)-O(7) bond length is 2.12 Å. The Co(4)-O(8) bond length is 2.12 Å. In the fifth Co site, Co(5) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form CoO6 octahedra that share corners with six equivalent Co(3)O6 octahedra, edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-14°. The Co(5)-O(1) bond length is 2.23 Å. The Co(5)-O(2) bond length is 2.15 Å. The Co(5)-O(4) bond length is 2.19 Å. The Co(5)-O(5) bond length is 2.40 Å. The Co(5)-O(6) bond length is 2.28 Å. The Co(5)-O(8) bond length is 2.32 Å. Sb(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form SbO6 octahedra that share edges with two equivalent Ca(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. The Sb(1)-O(1) bond length is 2.01 Å. The Sb(1)-O(2) bond length is 2.03 Å. The Sb(1)-O(3) bond length is 2.01 Å. The Sb(1)-O(6) bond length is 2.01 Å. The Sb(1)-O(7) bond length is 2.01 Å. The Sb(1)-O(8) bond length is 2.01 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1), one Co(3), one Co(4), one Co(5), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(8)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid. In the second O site, O(2) is bonded to one Co(1), one Co(2), one Co(3), one Co(5), and one Sb(1) atom to form OCo4Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid, corners with five equivalent O(6)Co4Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid, and  an edgeedge with one O(8)CaCo3Sb square pyramid. In the third O site, O(3) is bonded to one Ca(1), one Co(1), one Co(2), one Co(4), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(7)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(8)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid. In the fourth O site, O(4) is bonded to one Ca(1), one Co(1), one Co(2), one Co(3), one Co(4), and one Co(5) atom to form OCaCo5 octahedra that share corners with six equivalent O(5)CaCo5 octahedra, edges with two equivalent O(1)CaCo3Sb square pyramids, edges with two equivalent O(3)CaCo3Sb square pyramids, edges with two equivalent O(7)CaCo3Sb square pyramids, edges with two equivalent O(8)CaCo3Sb square pyramids, edges with two equivalent O(2)Co4Sb square pyramids, and edges with two equivalent O(6)Co4Sb square pyramids. The corner-sharing octahedral tilt angles range from 0-6°. In the fifth O site, O(5) is bonded to one Ca(1), one Co(1), one Co(2), one Co(3), one Co(4), and one Co(5) atom to form OCaCo5 octahedra that share corners with six equivalent O(4)CaCo5 octahedra, edges with two equivalent O(1)CaCo3Sb square pyramids, edges with two equivalent O(3)CaCo3Sb square pyramids, edges with two equivalent O(7)CaCo3Sb square pyramids, edges with two equivalent O(8)CaCo3Sb square pyramids, edges with two equivalent O(2)Co4Sb square pyramids, and edges with two equivalent O(6)Co4Sb square pyramids. The corner-sharing octahedral tilt angles range from 0-6°. In the sixth O site, O(6) is bonded to one Co(1), one Co(2), one Co(3), one Co(5), and one Sb(1) atom to form OCo4Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid, corners with five equivalent O(2)Co4Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid, and  an edgeedge with one O(8)CaCo3Sb square pyramid. In the seventh O site, O(7) is bonded to one Ca(1), one Co(1), one Co(2), one Co(4), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(1)CaCo3Sb square pyramid,  a cornercorner with one O(8)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(3)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(1)CaCo3Sb square pyramid,  an edgeedge with one O(8)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid. In the eighth O site, O(8) is bonded to one Ca(1), one Co(3), one Co(4), one Co(5), and one Sb(1) atom to form OCaCo3Sb square pyramids that share  a cornercorner with one O(3)CaCo3Sb square pyramid,  a cornercorner with one O(7)CaCo3Sb square pyramid,  a cornercorner with one O(2)Co4Sb square pyramid,  a cornercorner with one O(6)Co4Sb square pyramid, corners with five equivalent O(1)CaCo3Sb square pyramids, edges with two equivalent O(4)CaCo5 octahedra, edges with two equivalent O(5)CaCo5 octahedra,  an edgeedge with one O(3)CaCo3Sb square pyramid,  an edgeedge with one O(7)CaCo3Sb square pyramid,  an edgeedge with one O(2)Co4Sb square pyramid, and  an edgeedge with one O(6)Co4Sb square pyramid.