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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cr2CoH20N6ClO8 by Materials Project

(Cr2O7)2(Co(NH3)6)2(H2O)2Cl2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four azane;cobalt molecules, four hydrochloric acid molecules, four water molecules, and four Cr2O7 clusters. In each Cr2O7 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 1.63–1.80 Å. In the second 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 1.63–1.79 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom. 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 bent 120 degrees geometry to two Cr6+ atoms. In the seventh O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrCoH15N5ClO8 by Materials Project

CrCoN5H15O4ClO4 crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four ClO4 clusters and four CrCoN5H15O4 clusters. In each ClO4 cluster, there are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.45 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.47 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.47 Å. Cl1- is bonded in a tetrahedral geometry to four O2- atoms. In each CrCoN5H15O4 cluster, Cr6+ is bonded to four O2- atoms to form CrO4 tetrahedra that share a cornercorner with one CoN5O octahedra. The corner-sharing octahedral tilt angles are 43°. There are a spread of Cr–O bond distances ranging from 1.65–1.72 Å. Co3+ is bonded to five N+1.40- and one O2- atom to form CoN5O octahedra that share a cornercorner with one CrO4 tetrahedra. There is one shorter (1.96 Å) and four longer (1.98 Å) Co–N bond length. The Co–O bond length is 1.92 Å. There are three inequivalent N+1.40- sites. In the first N+1.40- site, N+1.40- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There is two shorter (1.03 Å) and one longer (1.04 Å) N–H bond length. In the second N+1.40- site, N+1.40- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. All N–H bond lengths are 1.03 Å. In the third N+1.40- site, N+1.40- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. All N–H bond lengths are 1.03 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N+1.40- atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cr6+ atom. 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 distorted bent 150 degrees geometry to one Cr6+ and one Co3+ atom.

36 MATERIALS SCIENCE↗