Materials Data on MgMnO2 by Materials Project

Abstract

MgMnO2 is Caswellsilverite-like structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with six equivalent MnO6 octahedra, edges with six equivalent MgO6 octahedra, and edges with six equivalent MnO6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Mg–O bond lengths are 2.15 Å. Mn2+ is bonded to six equivalent O2- atoms to form MnO6 octahedra that share corners with six equivalent MgO6 octahedra, edges with six equivalent MgO6 octahedra, and edges with six equivalent MnO6 octahedra. The corner-sharing octahedral tilt angles are 3°. All Mn–O bond lengths are 2.24 Å. O2- is bonded to three equivalent Mg2+ and three equivalent Mn2+ atoms to form a mixture of edge and corner-sharing OMg3Mn3 octahedra. The corner-sharing octahedral tilt angles are 0°.