Materials Data on MgAu3 by Materials Project

MgAu3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Mg is bonded to twelve Au atoms to form a mixture of face, edge, and corner-sharing MgAu12 cuboctahedra. There are four shorter (2.88 Å) and eight longer (2.96 Å) Mg–Au bond lengths. There are two inequivalent Au sites. In the first Au site, Au is bonded in a square co-planar geometry to four equivalent Mg atoms. In the second Au site, Au is bonded to four equivalent Mg atoms to form a mixture of distorted edge and corner-sharing AuMg4 cuboctahedra.