Materials Data on Cd3S3O20 by Materials Project

Abstract

(CdSO4)3(O2)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional and consists of sixteen hydrogen peroxide molecules and one CdSO4 framework. In the CdSO4 framework, there are two inequivalent Cd sites. In the first Cd site, Cd is bonded in a rectangular see-saw-like geometry to four O atoms. There are two shorter (2.17 Å) and two longer (2.23 Å) Cd–O bond lengths. In the second Cd site, Cd is bonded to four O atoms to form distorted CdO4 tetrahedra that share corners with four SO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.19–2.21 Å. There are two inequivalent S sites. In the first S site, S is bonded to four O atoms to form SO4 tetrahedra that share corners with four equivalent CdO4 tetrahedra. All S–O bond lengths are 1.49 Å. In the second S site, S is bonded to four O atoms to form SO4 tetrahedra that share corners with two equivalent CdO4 tetrahedra. There are a spread of S–O bond distances ranging from 1.48–1.50 Å. There are six inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Cd and one S atom. In the second O site, O is bonded in a distorted bent 150 degrees geometry to one Cd and one S atom. In the third O site, O is bonded in a distorted bent 150 degrees geometry to one Cd and one S atom. In the fourth O site, O is bonded in a distorted bent 150 degrees geometry to one Cd and one S atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to one Cd and one S atom. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one Cd and one S atom.