Materials Data on CuAg(AsO4)2 by Materials Project

Abstract

AgCu(AsO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ag3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ag–O bond distances ranging from 2.17–2.83 Å. Cu3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There is one shorter (1.85 Å) and three longer (1.90 Å) Cu–O bond length. There are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of As–O bond distances ranging from 1.71–1.77 Å. In the second As5+ site, As5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of As–O bond distances ranging from 1.69–1.77 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ag3+ and one As5+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu3+ and one As5+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ag3+, one Cu3+, and one As5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ag3+, one Cu3+, and one As5+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one Ag3+ and one As5+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Ag3+, one Cu3+, and one As5+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Ag3+ and one As5+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ag3+ and one As5+ atom.