Materials Data on Mn8Ga5 by Materials Project

Abstract

Ga5Mn8 is gamma-brass structured and crystallizes in the cubic I-43m space group. The structure is three-dimensional. there are two inequivalent Mn sites. In the first Mn site, Mn is bonded in a 6-coordinate geometry to six Mn and six Ga atoms. There are three shorter (2.63 Å) and three longer (2.70 Å) Mn–Mn bond lengths. There are three shorter (2.60 Å) and three longer (2.64 Å) Mn–Ga bond lengths. In the second Mn site, Mn is bonded in a 11-coordinate geometry to five Mn and six Ga atoms. All Mn–Mn bond lengths are 2.65 Å. There are a spread of Mn–Ga bond distances ranging from 2.55–2.85 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to nine Mn and three equivalent Ga atoms. All Ga–Ga bond lengths are 2.73 Å. In the second Ga site, Ga is bonded in a 4-coordinate geometry to ten Mn and three Ga atoms. The Ga–Ga bond length is 2.57 Å.