Co8(BiO4)5 crystallizes in the triclinic P1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(20), one O(6), and one O(8) atom. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and one O(9) atom. In the third Co site, Co(3) is bonded to one O(12), one O(13), one O(2), one O(3), and one O(7) atom to form distorted corner-sharing CoO5 square pyramids. In the fourth Co site, Co(4) is bonded to one O(10), one O(19), one O(2), one O(5), and one O(6) atom to form corner-sharing CoO5 trigonal bipyramids. In the fifth Co site, Co(5) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(16), one O(19), one O(3), one O(4), and one O(9) atom. In the sixth Co site, Co(6) is bonded to one O(13), one O(14), one O(15), one O(18), and one O(9) atom to form corner-sharing CoO5 square pyramids. In the seventh Co site, Co(7) is bonded to one O(11), one O(18), one O(19), one O(4), and one O(8) atom to form corner-sharing CoO5 square pyramids. In the eighth Co site, Co(8) is bonded to one O(10), one O(11), one O(15), one O(17), and one O(3) atom to form corner-sharing CoO5 square pyramids. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(17), one O(2), one O(20), one O(4), and one O(5) atom. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(15), one O(16), one O(5), one O(8), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 4-coordinate geometry to one O(10), one O(12), one O(14), and one O(20) atom. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(14), one O(16), one O(18), and one O(3) atom. In the fifth Bi site, Bi(5) is bonded in a 6-coordinate geometry to one O(12), one O(15), one O(16), one O(17), one O(18), and one O(19) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one Bi(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one Bi(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), one Co(8), and one Bi(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Co(2), one Co(5), one Co(7), and one Bi(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Co(4), one Bi(1), and one Bi(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Co(4) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Co(2) and one Co(3) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Co(1), one Co(7), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), one Co(5), one Co(6), and one Bi(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Co(4), one Co(5), one Co(8), and one Bi(3) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Co(7), one Co(8), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Co(3), one Bi(3), and one Bi(5) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Co(5), and one Co(6) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Co(6), one Bi(3), and one Bi(4) atom. In the fifteenth O site, O(15) is bonded in a distorted see-saw-like geometry to one Co(6), one Co(8), one Bi(2), and one Bi(5) atom. In the sixteenth O site, O(16) is bonded in a trigonal pyramidal geometry to one Co(5), one Bi(2), one Bi(4), and one Bi(5) atom. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to one Co(8), one Bi(1), and one Bi(5) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Co(6), one Co(7), one Bi(4), and one Bi(5) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 120 degrees geometry to one Co(4), one Co(5), one Co(7), and one Bi(5) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Co(1), one Bi(1), and one Bi(3) atom.
Co8(BiO4)5 crystallizes in the triclinic P1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(20), one O(6), and one O(8) atom. The Co(1)-O(1) bond length is 1.85 Å. The Co(1)-O(20) bond length is 1.89 Å. The Co(1)-O(6) bond length is 1.86 Å. The Co(1)-O(8) bond length is 1.79 Å. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and one O(9) atom. The Co(2)-O(1) bond length is 1.98 Å. The Co(2)-O(4) bond length is 2.00 Å. The Co(2)-O(6) bond length is 2.08 Å. The Co(2)-O(7) bond length is 1.77 Å. The Co(2)-O(9) bond length is 1.95 Å. In the third Co site, Co(3) is bonded to one O(12), one O(13), one O(2), one O(3), and one O(7) atom to form distorted corner-sharing CoO5 square pyramids. The Co(3)-O(12) bond length is 1.98 Å. The Co(3)-O(13) bond length is 1.84 Å. The Co(3)-O(2) bond length is 1.84 Å. The Co(3)-O(3) bond length is 1.91 Å. The Co(3)-O(7) bond length is 1.83 Å. In the fourth Co site, Co(4) is bonded to one O(10), one O(19), one O(2), one O(5), and one O(6) atom to form corner-sharing CoO5 trigonal bipyramids. The Co(4)-O(10) bond length is 1.95 Å. The Co(4)-O(19) bond length is 1.87 Å. The Co(4)-O(2) bond length is 1.83 Å. The Co(4)-O(5) bond length is 1.90 Å. The Co(4)-O(6) bond length is 1.86 Å. In the fifth Co site, Co(5) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(16), one O(19), one O(3), one O(4), and one O(9) atom. The Co(5)-O(10) bond length is 2.42 Å. The Co(5)-O(13) bond length is 2.17 Å. The Co(5)-O(16) bond length is 2.14 Å. The Co(5)-O(19) bond length is 2.67 Å. The Co(5)-O(3) bond length is 2.15 Å. The Co(5)-O(4) bond length is 2.11 Å. The Co(5)-O(9) bond length is 2.51 Å. In the sixth Co site, Co(6) is bonded to one O(13), one O(14), one O(15), one O(18), and one O(9) atom to form corner-sharing CoO5 square pyramids. The Co(6)-O(13) bond length is 1.87 Å. The Co(6)-O(14) bond length is 1.86 Å. The Co(6)-O(15) bond length is 1.96 Å. The Co(6)-O(18) bond length is 1.87 Å. The Co(6)-O(9) bond length is 1.94 Å. In the seventh Co site, Co(7) is bonded to one O(11), one O(18), one O(19), one O(4), and one O(8) atom to form corner-sharing CoO5 square pyramids. The Co(7)-O(11) bond length is 1.84 Å. The Co(7)-O(18) bond length is 1.83 Å. The Co(7)-O(19) bond length is 1.80 Å. The Co(7)-O(4) bond length is 2.00 Å. The Co(7)-O(8) bond length is 1.88 Å. In the eighth Co site, Co(8) is bonded to one O(10), one O(11), one O(15), one O(17), and one O(3) atom to form corner-sharing CoO5 square pyramids. The Co(8)-O(10) bond length is 1.96 Å. The Co(8)-O(11) bond length is 1.93 Å. The Co(8)-O(15) bond length is 1.86 Å. The Co(8)-O(17) bond length is 1.99 Å. The Co(8)-O(3) bond length is 1.87 Å. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(17), one O(2), one O(20), one O(4), and one O(5) atom. The Bi(1)-O(17) bond length is 2.10 Å. The Bi(1)-O(2) bond length is 2.32 Å. The Bi(1)-O(20) bond length is 2.48 Å. The Bi(1)-O(4) bond length is 2.77 Å. The Bi(1)-O(5) bond length is 2.28 Å. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(15), one O(16), one O(5), one O(8), and one O(9) atom. The Bi(2)-O(15) bond length is 2.41 Å. The Bi(2)-O(16) bond length is 2.38 Å. The Bi(2)-O(5) bond length is 2.11 Å. The Bi(2)-O(8) bond length is 2.62 Å. The Bi(2)-O(9) bond length is 2.25 Å. In the third Bi site, Bi(3) is bonded in a 4-coordinate geometry to one O(10), one O(12), one O(14), and one O(20) atom. The Bi(3)-O(10) bond length is 2.59 Å. The Bi(3)-O(12) bond length is 2.34 Å. The Bi(3)-O(14) bond length is 2.10 Å. The Bi(3)-O(20) bond length is 2.21 Å. In the fourth Bi site, Bi(4) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(14), one O(16), one O(18), and one O(3) atom. The Bi(4)-O(1) bond length is 2.12 Å. The Bi(4)-O(11) bond length is 2.44 Å. The Bi(4)-O(14) bond length is 2.35 Å. The Bi(4)-O(16) bond length is 2.33 Å. The Bi(4)-O(18) bond length is 2.60 Å. The Bi(4)-O(3) bond length is 2.66 Å. In the fifth Bi site, Bi(5) is bonded in a 6-coordinate geometry to one O(12), one O(15), one O(16), one O(17), one O(18), and one O(19) atom. The Bi(5)-O(12) bond length is 2.12 Å. The Bi(5)-O(15) bond length is 2.42 Å. The Bi(5)-O(16) bond length is 2.35 Å. The Bi(5)-O(17) bond length is 2.31 Å. The Bi(5)-O(18) bond length is 2.48 Å. The Bi(5)-O(19) bond length is 2.75 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one Bi(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one Bi(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Co(3), one Co(5), one Co(8), and one Bi(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Co(2), one Co(5), one Co(7), and one Bi(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Co(4), one Bi(1), and one Bi(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Co(4) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Co(2) and one Co(3) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Co(1), one Co(7), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), one Co(5), one Co(6), and one Bi(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Co(4), one Co(5), one Co(8), and one Bi(3) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Co(7), one Co(8), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Co(3), one Bi(3), and one Bi(5) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Co(5), and one Co(6) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Co(6), one Bi(3), and one Bi(4) atom. In the fifteenth O site, O(15) is bonded in a distorted see-saw-like geometry to one Co(6), one Co(8), one Bi(2), and one Bi(5) atom. In the sixteenth O site, O(16) is bonded in a trigonal pyramidal geometry to one Co(5), one Bi(2), one Bi(4), and one Bi(5) atom. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to one Co(8), one Bi(1), and one Bi(5) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Co(6), one Co(7), one Bi(4), and one Bi(5) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 120 degrees geometry to one Co(4), one Co(5), one Co(7), and one Bi(5) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal planar geometry to one Co(1), one Bi(1), and one Bi(3) atom.