Materials Data on YMg3 by Materials Project

Abstract

YMg3 is Uranium Silicide structured and crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded in a distorted body-centered cubic geometry to four equivalent Mg and four equivalent Y atoms. All Mg–Mg bond lengths are 3.23 Å. There are two shorter (3.20 Å) and two longer (3.21 Å) Mg–Y bond lengths. In the second Mg site, Mg is bonded in a distorted body-centered cubic geometry to four equivalent Mg and four equivalent Y atoms. All Mg–Mg bond lengths are 3.20 Å. All Mg–Y bond lengths are 3.23 Å. In the third Mg site, Mg is bonded to eight Mg and four equivalent Y atoms to form a mixture of corner and face-sharing MgY4Mg8 cuboctahedra. There are two shorter (3.55 Å) and two longer (3.60 Å) Mg–Y bond lengths. Y is bonded in a 12-coordinate geometry to twelve Mg atoms.