Co3BiO8 is trigonal omega-derived structured and crystallizes in the monoclinic P2_1 space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(14), one O(2), one O(4), one O(6), and one O(9) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. In the second Co site, Co(2) is bonded to one O(10), one O(15), one O(3), one O(4), one O(5), and one O(6) atom to form CoO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Bi(2)O6 octahedra. In the third Co site, Co(3) is bonded to one O(11), one O(16), one O(3), one O(5), one O(7), and one O(8) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(6)O6 octahedra. In the fourth Co site, Co(4) is bonded to one O(1), one O(10), one O(12), one O(14), one O(6), and one O(9) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. In the fifth Co site, Co(5) is bonded to one O(11), one O(12), one O(13), one O(14), one O(2), and one O(7) atom to form CoO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Bi(1)O6 octahedra. In the sixth Co site, Co(6) is bonded to one O(11), one O(13), one O(15), one O(16), one O(3), and one O(8) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(12), one O(13), one O(2), one O(7), and one O(8) atom to form distorted BiO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. In the second Bi site, Bi(2) is bonded to one O(10), one O(15), one O(16), one O(4), one O(5), and one O(9) atom to form distorted BiO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one Bi(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Co(1), one Co(5), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), and one Bi(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Co(1), one Co(2), and one Co(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Co(3), one Co(5), and one Bi(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(3), one Co(6), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one Bi(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Co(2), one Co(4), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Co(5), and one Co(6) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Co(4), one Co(5), and one Bi(1) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Co(5), one Co(6), and one Bi(1) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Co(1), one Co(4), and one Co(5) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Co(2), one Co(6), and one Bi(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Co(3), one Co(6), and one Bi(2) atom.
Co3BiO8 is trigonal omega-derived structured and crystallizes in the monoclinic P2_1 space group. There are six inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(14), one O(2), one O(4), one O(6), and one O(9) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. The Co(1)-O(1) bond length is 1.91 Å. The Co(1)-O(14) bond length is 1.91 Å. The Co(1)-O(2) bond length is 1.89 Å. The Co(1)-O(4) bond length is 1.89 Å. The Co(1)-O(6) bond length is 1.86 Å. The Co(1)-O(9) bond length is 1.87 Å. In the second Co site, Co(2) is bonded to one O(10), one O(15), one O(3), one O(4), one O(5), and one O(6) atom to form CoO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Bi(2)O6 octahedra. The Co(2)-O(10) bond length is 1.89 Å. The Co(2)-O(15) bond length is 1.90 Å. The Co(2)-O(3) bond length is 1.86 Å. The Co(2)-O(4) bond length is 1.89 Å. The Co(2)-O(5) bond length is 1.89 Å. The Co(2)-O(6) bond length is 1.87 Å. In the third Co site, Co(3) is bonded to one O(11), one O(16), one O(3), one O(5), one O(7), and one O(8) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(6)O6 octahedra. The Co(3)-O(11) bond length is 1.86 Å. The Co(3)-O(16) bond length is 1.91 Å. The Co(3)-O(3) bond length is 1.86 Å. The Co(3)-O(5) bond length is 1.91 Å. The Co(3)-O(7) bond length is 1.89 Å. The Co(3)-O(8) bond length is 1.89 Å. In the fourth Co site, Co(4) is bonded to one O(1), one O(10), one O(12), one O(14), one O(6), and one O(9) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The Co(4)-O(1) bond length is 1.89 Å. The Co(4)-O(10) bond length is 1.88 Å. The Co(4)-O(12) bond length is 1.90 Å. The Co(4)-O(14) bond length is 1.91 Å. The Co(4)-O(6) bond length is 1.90 Å. The Co(4)-O(9) bond length is 1.90 Å. In the fifth Co site, Co(5) is bonded to one O(11), one O(12), one O(13), one O(14), one O(2), and one O(7) atom to form CoO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Bi(1)O6 octahedra. The Co(5)-O(11) bond length is 1.86 Å. The Co(5)-O(12) bond length is 1.88 Å. The Co(5)-O(13) bond length is 1.89 Å. The Co(5)-O(14) bond length is 1.86 Å. The Co(5)-O(2) bond length is 1.94 Å. The Co(5)-O(7) bond length is 1.91 Å. In the sixth Co site, Co(6) is bonded to one O(11), one O(13), one O(15), one O(16), one O(3), and one O(8) atom to form CoO6 octahedra that share  an edgeedge with one Co(2)O6 octahedra,  an edgeedge with one Co(5)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. The Co(6)-O(11) bond length is 1.93 Å. The Co(6)-O(13) bond length is 1.91 Å. The Co(6)-O(15) bond length is 1.88 Å. The Co(6)-O(16) bond length is 1.89 Å. The Co(6)-O(3) bond length is 1.93 Å. The Co(6)-O(8) bond length is 1.90 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(12), one O(13), one O(2), one O(7), and one O(8) atom to form distorted BiO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. The Bi(1)-O(1) bond length is 2.23 Å. The Bi(1)-O(12) bond length is 2.23 Å. The Bi(1)-O(13) bond length is 2.21 Å. The Bi(1)-O(2) bond length is 2.22 Å. The Bi(1)-O(7) bond length is 2.23 Å. The Bi(1)-O(8) bond length is 2.20 Å. In the second Bi site, Bi(2) is bonded to one O(10), one O(15), one O(16), one O(4), one O(5), and one O(9) atom to form distorted BiO6 octahedra that share  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(3)O6 octahedra,  an edgeedge with one Co(4)O6 octahedra,  an edgeedge with one Co(6)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The Bi(2)-O(10) bond length is 2.22 Å. The Bi(2)-O(15) bond length is 2.23 Å. The Bi(2)-O(16) bond length is 2.20 Å. The Bi(2)-O(4) bond length is 2.25 Å. The Bi(2)-O(5) bond length is 2.22 Å. The Bi(2)-O(9) bond length is 2.24 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one Bi(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Co(1), one Co(5), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), and one Bi(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Co(1), one Co(2), and one Co(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Co(3), one Co(5), and one Bi(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(3), one Co(6), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), and one Bi(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Co(2), one Co(4), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Co(5), and one Co(6) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Co(4), one Co(5), and one Bi(1) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Co(5), one Co(6), and one Bi(1) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Co(1), one Co(4), and one Co(5) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Co(2), one Co(6), and one Bi(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Co(3), one Co(6), and one Bi(2) atom.