Materials Data on Cr3(NO5)2 by Materials Project

Abstract

Cr3O10N2 crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of twelve ammonia molecules and six Cr3O10 clusters. In each Cr3O10 cluster, there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four O2- atoms to form corner-sharing CrO4 tetrahedra. There are a spread of Cr–O bond distances ranging from 1.63–1.78 Å. In the second Cr6+ site, Cr6+ is bonded to four O2- atoms to form corner-sharing CrO4 tetrahedra. There is two shorter (1.59 Å) and two longer (1.77 Å) Cr–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cr6+ atoms. In the second O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom.