Materials Data on PtAu by Materials Project

Abstract

PtAu crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Pt2- is bonded to six equivalent Pt2- and six equivalent Au2+ atoms to form PtPt6Au6 cuboctahedra that share corners with twelve equivalent AuPt6 cuboctahedra, corners with eighteen equivalent PtPt6Au6 cuboctahedra, edges with six equivalent PtPt6Au6 cuboctahedra, edges with twelve equivalent AuPt6 cuboctahedra, and faces with eight equivalent PtPt6Au6 cuboctahedra. All Pt–Pt bond lengths are 2.85 Å. All Pt–Au bond lengths are 2.91 Å. Au2+ is bonded to six equivalent Pt2- atoms to form distorted AuPt6 cuboctahedra that share corners with twelve equivalent PtPt6Au6 cuboctahedra, corners with twelve equivalent AuPt6 cuboctahedra, edges with six equivalent AuPt6 cuboctahedra, edges with twelve equivalent PtPt6Au6 cuboctahedra, and faces with two equivalent AuPt6 cuboctahedra.