MnOOH crystallizes in the orthorhombic Pnma space group. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 57°. H(1) is bonded in a distorted 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 to three equivalent Mn(1) and one H(1) atom to form distorted corner-sharing OMn3H tetrahedra. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Mn(1) and one H(1) atom.
MnOOH crystallizes in the orthorhombic Pnma space group. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 57°. There are two shorter (1.91 Å) and one longer (2.16 Å) Mn(1)-O(1) bond length. There are two shorter (1.98 Å) and one longer (2.32 Å) Mn(1)-O(2) bond length. H(1) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.61 Å. The H(1)-O(2) bond length is 1.01 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Mn(1) and one H(1) atom to form distorted corner-sharing OMn3H tetrahedra. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Mn(1) and one H(1) atom.