AlOOH crystallizes in the orthorhombic Pnma space group. Al(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 55°. H(1) is bonded in a distorted single-bond 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 to three equivalent Al(1) and one H(1) atom to form distorted corner-sharing OAl3H tetrahedra. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Al(1) and one H(1) atom.
AlOOH crystallizes in the orthorhombic Pnma space group. Al(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are two shorter (1.85 Å) and one longer (1.86 Å) Al(1)-O(1) bond length. All Al(1)-O(2) bond lengths are 1.97 Å. H(1) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.63 Å. The H(1)-O(2) bond length is 1.00 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Al(1) and one H(1) atom to form distorted corner-sharing OAl3H tetrahedra. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Al(1) and one H(1) atom.