Materials Data on MnHO2 by Materials Project

Abstract

MnOOH crystallizes in the monoclinic Cm space group. The structure is three-dimensional. Mn3+ is bonded to six O2- atoms to form distorted edge-sharing MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.95–2.34 Å. H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.06 Å) and one longer (1.46 Å) H–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three equivalent Mn3+ and one H1+ atom. In the second O2- site, O2- is bonded to three equivalent Mn3+ and one H1+ atom to form distorted corner-sharing OMn3H tetrahedra.