Materials Data on Mg2Sn by Materials Project

Abstract

Mg2Sn crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Mg is bonded to seven equivalent Mg and five equivalent Sn atoms to form distorted MgMg7Sn5 cuboctahedra that share corners with six equivalent SnMg10Sn2 cuboctahedra, corners with twelve equivalent MgMg7Sn5 cuboctahedra, edges with four equivalent SnMg10Sn2 cuboctahedra, edges with fourteen equivalent MgMg7Sn5 cuboctahedra, faces with eight equivalent SnMg10Sn2 cuboctahedra, and faces with twelve equivalent MgMg7Sn5 cuboctahedra. There are a spread of Mg–Mg bond distances ranging from 3.19–3.26 Å. There are a spread of Mg–Sn bond distances ranging from 3.19–3.32 Å. Sn is bonded to ten equivalent Mg and two equivalent Sn atoms to form distorted SnMg10Sn2 cuboctahedra that share corners with six equivalent SnMg10Sn2 cuboctahedra, corners with twelve equivalent MgMg7Sn5 cuboctahedra, edges with eight equivalent MgMg7Sn5 cuboctahedra, edges with ten equivalent SnMg10Sn2 cuboctahedra, faces with four equivalent SnMg10Sn2 cuboctahedra, and faces with sixteen equivalent MgMg7Sn5 cuboctahedra. Both Sn–Sn bond lengths are 3.27 Å.