Materials Data on Eu2Mg by Materials Project

Abstract

MgEu2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Mg is bonded in a body-centered cubic geometry to eight Eu atoms. There are a spread of Mg–Eu bond distances ranging from 3.45–3.61 Å. There are two inequivalent Eu sites. In the first Eu site, Eu is bonded in a 12-coordinate geometry to six equivalent Mg and four equivalent Eu atoms. There are two shorter (3.82 Å) and two longer (4.04 Å) Eu–Eu bond lengths. In the second Eu site, Eu is bonded to two equivalent Mg and ten Eu atoms to form a mixture of distorted edge, face, and corner-sharing EuEu10Mg2 cuboctahedra. There are four shorter (3.76 Å) and two longer (3.87 Å) Eu–Eu bond lengths.