CrCo3O8 is trigonal omega-derived structured and crystallizes in the trigonal R-3m space group. Cr(1) is bonded to six equivalent O(2) atoms to form CrO6 octahedra that share edges with six equivalent Co(1)O6 octahedra. Co(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CoO6 octahedra that share edges with two equivalent Cr(1)O6 octahedra and edges with four equivalent Co(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Cr(1) and two equivalent Co(1) atoms.
CrCo3O8 is trigonal omega-derived structured and crystallizes in the trigonal R-3m space group. Cr(1) is bonded to six equivalent O(2) atoms to form CrO6 octahedra that share edges with six equivalent Co(1)O6 octahedra. All Cr(1)-O(2) bond lengths are 1.95 Å. Co(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CoO6 octahedra that share edges with two equivalent Cr(1)O6 octahedra and edges with four equivalent Co(1)O6 octahedra. Both Co(1)-O(1) bond lengths are 1.90 Å. All Co(1)-O(2) bond lengths are 1.89 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Cr(1) and two equivalent Co(1) atoms.