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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Na3Co(NO2)6 by Materials Project

Na3Co(NO2)6 crystallizes in the trigonal R-3 space group. The structure is three-dimensional and consists of three cobalt molecules and one Na(NO2)2 framework. In the Na(NO2)2 framework, there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to twelve O2- atoms to form a mixture of corner and face-sharing NaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 48°. There are six shorter (2.71 Å) and six longer (2.92 Å) Na–O bond lengths. In the second Na1+ site, Na1+ is bonded to six O2- atoms to form a mixture of corner and face-sharing NaO6 octahedra. There are three shorter (2.35 Å) and three longer (2.37 Å) Na–O bond lengths. N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.24 Å) and one longer (1.25 Å) N–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two Na1+ and one N3+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+ and one N3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Co(NO3)4 by Materials Project

Na2Co(NO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.37–2.76 Å. In the second Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.79 Å. Co2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Co–O bond distances ranging from 2.07–2.63 Å. There are four inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.29 Å. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.30 Å. In the third N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.30 Å. In the fourth N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.23–1.30 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Co2+, and one N5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one Co2+, and one N5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Co2+, and one N5+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Co2+, and one N5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+ and one N5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+ and one N5+ atom. In the seventh O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+, one Co2+, and one N5+ atom. In the eighth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+, one Co2+, and one N5+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+ and one N5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one Co2+, and one N5+ atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one Na1+ and one N5+ atom. In the twelfth O2- site, O2- is bonded in a 1-coordinate geometry to one Na1+, one Co2+, and one N5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaCo(N2O3)4 by Materials Project

Na(Na(NO3)4)3(Co)4(N2)5(N5O6)2 crystallizes in the cubic P23 space group. The structure is zero-dimensional and consists of ten ammonia molecules, four cobalt molecules, one sodium molecule, one N5O6 cluster, and three Na(NO3)4 clusters. In the N5O6 cluster, there are two inequivalent N+2.50+ sites. In the first N+2.50+ site, N+2.50+ is bonded in a 2-coordinate geometry to two equivalent O2- atoms. Both N–O bond lengths are 2.11 Å. In the second N+2.50+ site, N+2.50+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All N–O bond lengths are 1.27 Å. O2- is bonded in a distorted single-bond geometry to two N+2.50+ atoms. In each Na(NO3)4 cluster, Na1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are four shorter (2.68 Å) and four longer (2.72 Å) Na–O bond lengths. There are two inequivalent N+2.50+ sites. In the first N+2.50+ site, N+2.50+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.24 Å. In the second N+2.50+ site, N+2.50+ is bonded in a water-like geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.37 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+ and one N+2.50+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+, one N+2.50+, and one O2- atom. The O–O bond length is 1.32 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaCo(N2O3)4 by Materials Project

Na(NO2)6CoN2 is Heusler structured and crystallizes in the cubic Fm-3 space group. The structure is zero-dimensional and consists of eight ammonia molecules, four cobalt molecules, and four Na(NO2)6 clusters. In each Na(NO2)6 cluster, Na1+ is bonded in a cuboctahedral geometry to twelve equivalent O2- atoms. All Na–O bond lengths are 2.79 Å. N+2.50+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.23 Å. O2- is bonded in a distorted single-bond geometry to one Na1+ and one N+2.50+ atom.

36 MATERIALS SCIENCE↗