Co5(Bi2O5)4 crystallizes in the triclinic P1 space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded in a 3-coordinate geometry to one O(11), one O(19), and one O(2) atom. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to one O(19) and one O(3) atom. In the third Co site, Co(3) is bonded in a 2-coordinate geometry to one O(12), one O(16), and one O(20) atom. In the fourth Co site, Co(4) is bonded in a 1-coordinate geometry to one Bi(7), one O(13), one O(15), one O(3), and one O(8) atom. In the fifth Co site, Co(5) is bonded in a 2-coordinate geometry to one O(10), one O(18), and one O(9) atom. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a distorted bent 150 degrees geometry to one O(1) and one O(14) atom. In the second Bi site, Bi(2) is bonded in a distorted single-bond geometry to one O(5), one O(6), and one O(8) atom. In the third Bi site, Bi(3) is bonded in a distorted L-shaped geometry to one O(5) and one O(7) atom. In the fourth Bi site, Bi(4) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(4), and one O(9) atom. In the fifth Bi site, Bi(5) is bonded in a single-bond geometry to one O(13), one O(18), and one O(9) atom. In the sixth Bi site, Bi(6) is bonded in a distorted bent 150 degrees geometry to one O(16) and one O(4) atom. In the seventh Bi site, Bi(7) is bonded in a 6-coordinate geometry to one Co(4), one O(1), one O(12), one O(13), one O(3), and one O(4) atom. In the eighth Bi site, Bi(8) is bonded in a distorted linear geometry to one O(17) and one O(19) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Bi(1) and one Bi(7) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Co(1) and one Bi(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(2), one Co(4), and one Bi(7) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Bi(4), one Bi(6), and one Bi(7) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Bi(2) and one Bi(3) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Bi(2) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one Bi(3) and one O(8) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(4), one Bi(2), and one O(7) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Co(5), one Bi(4), and one Bi(5) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Co(5) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Co(1) and one O(15) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Co(3), one Bi(7), and one O(16) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Co(4), one Bi(5), and one Bi(7) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Bi(1) and one O(16) atom. In the fifteenth O site, O(15) is bonded in an L-shaped geometry to one Co(4) and one O(11) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Co(3), one Bi(6), one O(12), and one O(14) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to one Bi(8) atom. In the eighteenth O site, O(18) is bonded in an L-shaped geometry to one Co(5) and one Bi(5) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one Bi(8) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one Co(3) atom.
Co5(Bi2O5)4 crystallizes in the triclinic P1 space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded in a 3-coordinate geometry to one O(11), one O(19), and one O(2) atom. The Co(1)-O(11) bond length is 1.18 Å. The Co(1)-O(19) bond length is 1.99 Å. The Co(1)-O(2) bond length is 1.67 Å. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to one O(19) and one O(3) atom. The Co(2)-O(19) bond length is 1.77 Å. The Co(2)-O(3) bond length is 1.99 Å. In the third Co site, Co(3) is bonded in a 2-coordinate geometry to one O(12), one O(16), and one O(20) atom. The Co(3)-O(12) bond length is 1.90 Å. The Co(3)-O(16) bond length is 2.46 Å. The Co(3)-O(20) bond length is 1.67 Å. In the fourth Co site, Co(4) is bonded in a 1-coordinate geometry to one Bi(7), one O(13), one O(15), one O(3), and one O(8) atom. The Co(4)-Bi(7) bond length is 1.99 Å. The Co(4)-O(13) bond length is 2.63 Å. The Co(4)-O(15) bond length is 2.47 Å. The Co(4)-O(3) bond length is 1.67 Å. The Co(4)-O(8) bond length is 2.20 Å. In the fifth Co site, Co(5) is bonded in a 2-coordinate geometry to one O(10), one O(18), and one O(9) atom. The Co(5)-O(10) bond length is 1.92 Å. The Co(5)-O(18) bond length is 1.55 Å. The Co(5)-O(9) bond length is 2.25 Å. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a distorted bent 150 degrees geometry to one O(1) and one O(14) atom. The Bi(1)-O(1) bond length is 1.45 Å. The Bi(1)-O(14) bond length is 1.72 Å. In the second Bi site, Bi(2) is bonded in a distorted single-bond geometry to one O(5), one O(6), and one O(8) atom. The Bi(2)-O(5) bond length is 1.47 Å. The Bi(2)-O(6) bond length is 2.56 Å. The Bi(2)-O(8) bond length is 2.38 Å. In the third Bi site, Bi(3) is bonded in a distorted L-shaped geometry to one O(5) and one O(7) atom. The Bi(3)-O(5) bond length is 2.22 Å. The Bi(3)-O(7) bond length is 2.10 Å. In the fourth Bi site, Bi(4) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(4), and one O(9) atom. The Bi(4)-O(2) bond length is 1.96 Å. The Bi(4)-O(4) bond length is 2.39 Å. The Bi(4)-O(9) bond length is 2.47 Å. In the fifth Bi site, Bi(5) is bonded in a single-bond geometry to one O(13), one O(18), and one O(9) atom. The Bi(5)-O(13) bond length is 2.79 Å. The Bi(5)-O(18) bond length is 1.35 Å. The Bi(5)-O(9) bond length is 2.60 Å. In the sixth Bi site, Bi(6) is bonded in a distorted bent 150 degrees geometry to one O(16) and one O(4) atom. The Bi(6)-O(16) bond length is 2.14 Å. The Bi(6)-O(4) bond length is 2.03 Å. In the seventh Bi site, Bi(7) is bonded in a 6-coordinate geometry to one Co(4), one O(1), one O(12), one O(13), one O(3), and one O(4) atom. The Bi(7)-O(1) bond length is 2.80 Å. The Bi(7)-O(12) bond length is 2.32 Å. The Bi(7)-O(13) bond length is 2.59 Å. The Bi(7)-O(3) bond length is 2.24 Å. The Bi(7)-O(4) bond length is 2.67 Å. In the eighth Bi site, Bi(8) is bonded in a distorted linear geometry to one O(17) and one O(19) atom. The Bi(8)-O(17) bond length is 1.22 Å. The Bi(8)-O(19) bond length is 1.59 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Bi(1) and one Bi(7) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Co(1) and one Bi(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(2), one Co(4), and one Bi(7) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Bi(4), one Bi(6), and one Bi(7) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Bi(2) and one Bi(3) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Bi(2) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one Bi(3) and one O(8) atom. The O(7)-O(8) bond length is 1.85 Å. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(4), one Bi(2), and one O(7) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Co(5), one Bi(4), and one Bi(5) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Co(5) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Co(1) and one O(15) atom. The O(11)-O(15) bond length is 1.55 Å. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Co(3), one Bi(7), and one O(16) atom. The O(12)-O(16) bond length is 1.82 Å. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Co(4), one Bi(5), and one Bi(7) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Bi(1) and one O(16) atom. The O(14)-O(16) bond length is 1.97 Å. In the fifteenth O site, O(15) is bonded in an L-shaped geometry to one Co(4) and one O(11) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Co(3), one Bi(6), one O(12), and one O(14) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to one Bi(8) atom. In the eighteenth O site, O(18) is bonded in an L-shaped geometry to one Co(5) and one Bi(5) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one Bi(8) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one Co(3) atom.