Materials Data on Sr(AsO4)2 by Materials Project

Abstract

Sr(AsO4)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Sr is bonded in a 6-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.41–3.21 Å. There are two inequivalent As sites. In the first As site, As is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of As–O bond distances ranging from 1.64–1.88 Å. In the second As site, As is bonded in a tetrahedral geometry to four O atoms. There are a spread of As–O bond distances ranging from 1.66–1.87 Å. There are eight inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to two equivalent Sr and one As atom. In the second O site, O is bonded in a distorted single-bond geometry to one Sr, one As, and one O atom. The O–O bond length is 1.48 Å. In the third O site, O is bonded in a single-bond geometry to one As atom. In the fourth O site, O is bonded in a 1-coordinate geometry to one Sr, one As, and one O atom. In the fifth O site, O is bonded in a 1-coordinate geometry to one Sr, one As, and one O atom. The O–O bond length is 1.49 Å. In the sixth O site, O is bonded in a distorted trigonal planar geometry to two equivalent Sr and one As atom. In the seventh O site, O is bonded in a distorted bent 150 degrees geometry to one Sr and one As atom. In the eighth O site, O is bonded in a distorted single-bond geometry to one As atom.