CoOOH crystallizes in the monoclinic C2/m space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent O(1) atoms to form edge-sharing CoO6 octahedra. In the second Co site, Co(2) is bonded to six equivalent O(2) atoms to form edge-sharing CoO6 octahedra. H(1) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Co(1) and one H(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Co(2) and one H(1) atom.
CoOOH crystallizes in the monoclinic C2/m space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent O(1) atoms to form edge-sharing CoO6 octahedra. There are four shorter (2.00 Å) and two longer (2.07 Å) Co(1)-O(1) bond lengths. In the second Co site, Co(2) is bonded to six equivalent O(2) atoms to form edge-sharing CoO6 octahedra. There are four shorter (1.92 Å) and two longer (2.15 Å) Co(2)-O(2) bond lengths. H(1) is bonded in a linear geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.18 Å. The H(1)-O(2) bond length is 1.24 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Co(1) and one H(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Co(2) and one H(1) atom.