Materials Data on CrN3O8 by Materials Project
(CrO8)2(N2)3 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of twelve ammonia molecules and four CrO8 clusters. In each CrO8 cluster, Cr3+ is bonded in a hexagonal bipyramidal geometry to eight O2- atoms. There are a spread of Cr–O bond distances ranging from 1.97–1.99 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. The O–O bond length is 1.33 Å. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. The O–O bond length is 1.33 Å. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. The O–O bond length is 1.33 Å. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. The O–O bond length is 1.33 Å. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to one Cr3+ and one O2- atom.