Materials Data on MgAg3 by Materials Project

Abstract

Ag3Mg is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Mg is bonded to twelve equivalent Ag atoms to form MgAg12 cuboctahedra that share corners with six equivalent MgAg12 cuboctahedra, corners with twelve equivalent AgMg4Ag8 cuboctahedra, edges with eighteen equivalent AgMg4Ag8 cuboctahedra, faces with eight equivalent MgAg12 cuboctahedra, and faces with twelve equivalent AgMg4Ag8 cuboctahedra. There are six shorter (2.94 Å) and six longer (2.95 Å) Mg–Ag bond lengths. Ag is bonded to four equivalent Mg and eight equivalent Ag atoms to form distorted AgMg4Ag8 cuboctahedra that share corners with four equivalent MgAg12 cuboctahedra, corners with fourteen equivalent AgMg4Ag8 cuboctahedra, edges with six equivalent MgAg12 cuboctahedra, edges with twelve equivalent AgMg4Ag8 cuboctahedra, faces with four equivalent MgAg12 cuboctahedra, and faces with sixteen equivalent AgMg4Ag8 cuboctahedra. There are four shorter (2.94 Å) and four longer (2.95 Å) Ag–Ag bond lengths.