Materials Data on SrMg by Materials Project

Abstract

SrMg crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are three inequivalent Sr sites. In the first Sr site, Sr is bonded in a 12-coordinate geometry to four Mg atoms. There are two shorter (3.60 Å) and two longer (3.79 Å) Sr–Mg bond lengths. In the second Sr site, Sr is bonded in a 12-coordinate geometry to eight Mg atoms. There are a spread of Sr–Mg bond distances ranging from 3.55–3.82 Å. In the third Sr site, Sr is bonded in a 12-coordinate geometry to six Mg atoms. There are a spread of Sr–Mg bond distances ranging from 3.58–3.90 Å. There are three inequivalent Mg sites. In the first Mg site, Mg is bonded in a distorted hexagonal planar geometry to six Sr atoms. In the second Mg site, Mg is bonded in a 8-coordinate geometry to eight Sr atoms. In the third Mg site, Mg is bonded to four Sr atoms to form distorted corner-sharing MgSr4 tetrahedra.