Materials Data on AgAs by Materials Project

Abstract

Ag(As) is beta-prime cadmium gold structured and crystallizes in the orthorhombic Pmma space group. The structure is three-dimensional. Ag1+ is bonded to four equivalent Ag1+ and eight equivalent As1- atoms to form AgAg4As8 cuboctahedra that share corners with eight equivalent AsAg8As4 cuboctahedra, corners with ten equivalent AgAg4As8 cuboctahedra, edges with six equivalent AgAg4As8 cuboctahedra, edges with twelve equivalent AsAg8As4 cuboctahedra, faces with eight equivalent AsAg8As4 cuboctahedra, and faces with twelve equivalent AgAg4As8 cuboctahedra. There are two shorter (2.96 Å) and two longer (3.02 Å) Ag–Ag bond lengths. There are four shorter (2.98 Å) and four longer (3.03 Å) Ag–As bond lengths. As1- is bonded to eight equivalent Ag1+ and four equivalent As1- atoms to form distorted AsAg8As4 cuboctahedra that share corners with eight equivalent AgAg4As8 cuboctahedra, corners with ten equivalent AsAg8As4 cuboctahedra, edges with six equivalent AsAg8As4 cuboctahedra, edges with twelve equivalent AgAg4As8 cuboctahedra, faces with eight equivalent AgAg4As8 cuboctahedra, and faces with twelve equivalent AsAg8As4 cuboctahedra. There are two shorter (2.96 Å) and two longer (3.03 Å) As–As bond lengths.