Materials Data on Ba4Ge20Pd3 by Materials Project

Abstract

Ba4Pd3Ge20 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. there are two inequivalent Ba sites. In the first Ba site, Ba is bonded in a 8-coordinate geometry to twenty Ge atoms. There are eight shorter (3.46 Å) and twelve longer (3.67 Å) Ba–Ge bond lengths. In the second Ba site, Ba is bonded in a 12-coordinate geometry to four equivalent Pd and eight equivalent Ge atoms. All Ba–Pd bond lengths are 3.86 Å. All Ba–Ge bond lengths are 3.63 Å. Pd is bonded to four equivalent Ba and four equivalent Ge atoms to form a mixture of edge and corner-sharing PdBa4Ge4 tetrahedra. All Pd–Ge bond lengths are 2.48 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 5-coordinate geometry to one Ba and four Ge atoms. There are one shorter (2.53 Å) and three longer (2.56 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 1-coordinate geometry to three Ba, one Pd, and two equivalent Ge atoms.