Materials Data on NaCr(SO10)2 by Materials Project
NaCrO12(SO4)2 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional and consists of eight sulfuric acid molecules and one NaCrO12 framework. In the NaCrO12 framework, Na is bonded in a 6-coordinate geometry to six equivalent O atoms. All Na–O bond lengths are 2.98 Å. Cr is bonded in an octahedral geometry to six equivalent O atoms. All Cr–O bond lengths are 2.12 Å. There are two inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to one Cr and one O atom. The O–O bond length is 1.25 Å. In the second O site, O is bonded in a bent 120 degrees geometry to one Na and one O atom.
36 MATERIALS SCIENCE↗