Co2AlO4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Co site, Co(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Al(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one Co(2), and one Al(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Co(1), one Co(2), and one Al(1) atom.
Co2AlO4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Co(1)-O(1) bond lengths are 1.85 Å. Both Co(1)-O(2) bond lengths are 1.91 Å. In the second Co site, Co(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Co(2)-O(1) bond lengths are 1.91 Å. Both Co(2)-O(2) bond lengths are 1.85 Å. Al(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Al(1)-O(1) bond lengths are 1.88 Å. Both Al(1)-O(2) bond lengths are 1.88 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Co(1), one Co(2), and one Al(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Co(1), one Co(2), and one Al(1) atom.