Materials Data on Mg3ZnO4 by Materials Project

Abstract

Mg3ZnO4 is Caswellsilverite-like structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with three equivalent MgO6 octahedra, corners with three equivalent ZnO6 octahedra, edges with three equivalent ZnO6 octahedra, and edges with nine MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are three shorter (2.12 Å) and three longer (2.14 Å) Mg–O bond lengths. In the second Mg2+ site, Mg2+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Mg–O bond lengths are 2.14 Å. Zn2+ is bonded to six equivalent O2- atoms to form ZnO6 octahedra that share corners with six equivalent MgO6 octahedra, edges with six equivalent MgO6 octahedra, and edges with six equivalent ZnO6 octahedra. The corner-sharing octahedral tilt angles are 2°. All Zn–O bond lengths are 2.16 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of corner and edge-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the second O2- site, O2- is bonded to three equivalent Mg2+ and three equivalent Zn2+ atoms to form a mixture of corner and edge-sharing OMg3Zn3 octahedra. The corner-sharing octahedra tilt angles range from 0–1°.