Materials Data on SrI2O15 by Materials Project

Abstract

SrO11I2(O2)2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of four oxygen molecules and one SrO11I2 sheet oriented in the (0, 1, 0) direction. In the SrO11I2 sheet, Sr is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Sr–O bond distances ranging from 2.39–2.74 Å. There are eleven inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Sr and one O atom. The O–O bond length is 1.22 Å. In the second O site, O is bonded in a water-like geometry to one Sr and one I atom. The O–I bond length is 1.81 Å. In the third O site, O is bonded in a linear geometry to one Sr and one I atom. The O–I bond length is 1.80 Å. In the fourth O site, O is bonded in a single-bond geometry to one I atom. The O–I bond length is 1.78 Å. In the fifth O site, O is bonded in a water-like geometry to one Sr and one I atom. The O–I bond length is 1.81 Å. In the sixth O site, O is bonded in a bent 150 degrees geometry to one Sr and one I atom. The O–I bond length is 1.83 Å. In the seventh O site, O is bonded in a distorted linear geometry to one Sr and one I atom. The O–I bond length is 1.88 Å. In the eighth O site, O is bonded in a single-bond geometry to one I atom. The O–I bond length is 1.93 Å. In the ninth O site, O is bonded in a single-bond geometry to one I atom. The O–I bond length is 1.93 Å. In the tenth O site, O is bonded in a single-bond geometry to one I atom. The O–I bond length is 1.93 Å. In the eleventh O site, O is bonded in a bent 150 degrees geometry to one Sr and one I atom. The O–I bond length is 1.84 Å. There are two inequivalent I sites. In the first I site, I is bonded in a tetrahedral geometry to four O atoms. In the second I site, I is bonded in an octahedral geometry to six O atoms.