Materials Data on SrGeAu3 by Materials Project

Abstract

SrAu3Ge crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Sr is bonded in a 4-coordinate geometry to twelve Au and four equivalent Ge atoms. There are four shorter (3.35 Å) and eight longer (3.60 Å) Sr–Au bond lengths. All Sr–Ge bond lengths are 3.53 Å. There are two inequivalent Au sites. In the first Au site, Au is bonded in a 1-coordinate geometry to four equivalent Sr and one Ge atom. The Au–Ge bond length is 2.49 Å. In the second Au site, Au is bonded in a distorted linear geometry to four equivalent Sr and two equivalent Ge atoms. Both Au–Ge bond lengths are 2.61 Å. Ge is bonded in a 5-coordinate geometry to four equivalent Sr and five Au atoms.