Materials Data on Cu3O4 by Materials Project

Abstract

Cu3O4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Cu+2.67+ sites. In the first Cu+2.67+ site, Cu+2.67+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.89 Å) and two longer (1.90 Å) Cu–O bond length. In the second Cu+2.67+ site, Cu+2.67+ is bonded to six O2- atoms to form edge-sharing CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 2.00–2.02 Å. In the third Cu+2.67+ site, Cu+2.67+ is bonded in a square co-planar geometry to four O2- atoms. All Cu–O bond lengths are 1.90 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four Cu+2.67+ atoms to form a mixture of distorted edge and corner-sharing OCu4 trigonal pyramids. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Cu+2.67+ atoms.