Materials Data on CsOs2O9 by Materials Project

CsOs2O9 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. Cs is bonded in a 11-coordinate geometry to fourteen O atoms. There are a spread of Cs–O bond distances ranging from 3.18–3.67 Å. There are two inequivalent Os sites. In the first Os site, Os is bonded in a 5-coordinate geometry to five O atoms. There are four shorter (1.74 Å) and one longer (2.29 Å) Os–O bond lengths. In the second Os site, Os is bonded in a distorted trigonal bipyramidal geometry to five O atoms. There are a spread of Os–O bond distances ranging from 1.74–2.20 Å. There are nine inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Cs and one Os atom. In the second O site, O is bonded in a single-bond geometry to two equivalent Cs and one Os atom. In the third O site, O is bonded in a distorted single-bond geometry to two equivalent Cs and one Os atom. In the fourth O site, O is bonded in a single-bond geometry to two equivalent Cs and one Os atom. In the fifth O site, O is bonded in a 2-coordinate geometry to one Cs and two Os atoms. In the sixth O site, O is bonded in a single-bond geometry to two equivalent Cs and one Os atom. In the seventh O site, O is bonded in a single-bond geometry to two equivalent Cs and one Os atom. In the eighth O site, O is bonded in a single-bond geometry to one Cs and one Os atom. In the ninth O site, O is bonded in a single-bond geometry to one Cs and one Os atom.