Materials Data on Sr3Co2(ClO2)2 by Materials Project

Abstract

Sr3Co2(O2Cl)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Sr–O bond lengths are 2.68 Å. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to four equivalent O2- and five equivalent Cl1- atoms. All Sr–O bond lengths are 2.60 Å. There are four shorter (3.10 Å) and one longer (3.42 Å) Sr–Cl bond lengths. Co2+ is bonded to four equivalent O2- and one Cl1- atom to form corner-sharing CoClO4 square pyramids. All Co–O bond lengths are 2.04 Å. The Co–Cl bond length is 2.65 Å. O2- is bonded to four Sr2+ and two equivalent Co2+ atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. Cl1- is bonded in a 6-coordinate geometry to five equivalent Sr2+ and one Co2+ atom.