LiCo2C2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to one O(7), two equivalent O(5), and two equivalent O(6) atoms to form distorted edge-sharing LiO5 square pyramids. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form corner-sharing CoO5 square pyramids. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Co(2) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(1), one Co(2), and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one C(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(1), one Co(2), and one C(2) atom.
LiCo2C2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to one O(7), two equivalent O(5), and two equivalent O(6) atoms to form distorted edge-sharing LiO5 square pyramids. The Li(1)-O(7) bond length is 1.99 Å. There is one shorter (2.26 Å) and one longer (2.52 Å) Li(1)-O(5) bond length. There is one shorter (2.10 Å) and one longer (2.13 Å) Li(1)-O(6) bond length. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form corner-sharing CoO5 square pyramids. The Co(1)-O(2) bond length is 2.04 Å. The Co(1)-O(3) bond length is 1.96 Å. The Co(1)-O(4) bond length is 1.95 Å. Both Co(1)-O(1) bond lengths are 1.82 Å. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. The Co(2)-O(1) bond length is 2.01 Å. The Co(2)-O(2) bond length is 2.04 Å. The Co(2)-O(3) bond length is 2.17 Å. The Co(2)-O(4) bond length is 2.09 Å. The Co(2)-O(5) bond length is 2.03 Å. The Co(2)-O(7) bond length is 2.46 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. The C(1)-O(3) bond length is 1.31 Å. The C(1)-O(4) bond length is 1.32 Å. The C(1)-O(6) bond length is 1.25 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(7) atom. The C(2)-O(2) bond length is 1.34 Å. The C(2)-O(5) bond length is 1.29 Å. The C(2)-O(7) bond length is 1.27 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Co(2) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(1), one Co(2), and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one C(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Li(1), one Co(2), and one C(2) atom.