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DOE OSTI2020

Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.75 Å) Cr–N bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to five N3- atoms to form CrN5 trigonal bipyramids that share corners with three CrN4 tetrahedra, corners with two equivalent CrN5 trigonal bipyramids, and an edgeedge with one CrN5 trigonal bipyramid. There are a spread of Cr–N bond distances ranging from 1.66–1.97 Å. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form CrN4 tetrahedra that share corners with two equivalent CrN4 tetrahedra and corners with three CrN5 trigonal bipyramids. There are a spread of Cr–N bond distances ranging from 1.64–1.89 Å. In the third Cr6+ site, Cr6+ is bonded to five N3- atoms to form distorted CrN5 trigonal bipyramids that share corners with three CrN4 tetrahedra, corners with two equivalent CrN5 trigonal bipyramids, and an edgeedge with one CrN5 trigonal bipyramid. There are a spread of Cr–N bond distances ranging from 1.62–2.08 Å. In the fourth Cr6+ site, Cr6+ is bonded to four N3- atoms to form CrN4 tetrahedra that share corners with two equivalent CrN4 tetrahedra and corners with three CrN5 trigonal bipyramids. There are a spread of Cr–N bond distances ranging from 1.66–1.84 Å. There are eight inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to three Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a distorted linear geometry to two Cr6+ atoms. In the fifth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the sixth N3- site, N3- is bonded in a distorted T-shaped geometry to three Cr6+ atoms. In the seventh N3- site, N3- is bonded in a bent 120 degrees geometry to two Cr6+ atoms. In the eighth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.74 Å) Cr–N bond length. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a distorted bent 150 degrees geometry to two equivalent Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 is High (Orthorhombic) Tridymite structured and crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.68–1.76 Å. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.69–1.77 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 is Keatite-like structured and crystallizes in the orthorhombic Ima2 space group. The structure is three-dimensional. Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.72 Å) and two longer (1.73 Å) Cr–N bond length. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms.

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Materials Data on Cr3N4 by Materials Project

Cr3N4 crystallizes in the hexagonal P6_3 space group. The structure is one-dimensional and consists of one Cr3N4 ribbon oriented in the (0, 0, 1) direction. there are three inequivalent Cr4+ sites. In the first Cr4+ site, Cr4+ is bonded in a tetrahedral geometry to four N3- atoms. There are a spread of Cr–N bond distances ranging from 1.56–1.91 Å. In the second Cr4+ site, Cr4+ is bonded in a trigonal planar geometry to three N3- atoms. There is one shorter (1.81 Å) and two longer (1.82 Å) Cr–N bond length. In the third Cr4+ site, Cr4+ is bonded in a trigonal planar geometry to three N3- atoms. There is one shorter (1.81 Å) and two longer (1.82 Å) Cr–N bond length. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to three Cr4+ atoms. In the second N3- site, N3- is bonded in a single-bond geometry to one Cr4+ atom. In the third N3- site, N3- is bonded in a trigonal planar geometry to three Cr4+ atoms. In the fourth N3- site, N3- is bonded in a trigonal planar geometry to three Cr4+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.58–1.86 Å. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.67–1.84 Å. In the third Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.67–1.81 Å. In the fourth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.68–1.86 Å. There are eight inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the second N3- site, N3- is bonded in a single-bond geometry to one Cr6+ atom. In the third N3- site, N3- is bonded in a water-like geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fifth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the sixth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the seventh N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to three Cr6+ atoms. In the eighth N3- site, N3- is bonded in a bent 120 degrees geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 is Low Tridymite-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.74 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the fourth N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms.

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Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.75 Å) Cr–N bond length. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrN2 by Materials Project

CrN2 is High (Orthorhombic) Tridymite-like structured and crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. there are five inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.72 Å) and two longer (1.74 Å) Cr–N bond length. In the third Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is three shorter (1.73 Å) and one longer (1.74 Å) Cr–N bond length. In the fourth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.71 Å) and two longer (1.74 Å) Cr–N bond length. In the fifth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.70–1.74 Å. There are eight inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the fifth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the sixth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the seventh N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the eighth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms.

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Materials Data on CrN by Materials Project

CrN is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Cr3+ is bonded to four equivalent N3- atoms to form corner-sharing CrN4 tetrahedra. All Cr–N bond lengths are 1.91 Å. N3- is bonded to four equivalent Cr3+ atoms to form corner-sharing NCr4 tetrahedra.

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Materials Data on Cr3N2 by Materials Project

Cr3N2 crystallizes in the monoclinic C2 space group. The structure is two-dimensional and consists of one Cr3N2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Cr2+ sites. In the first Cr2+ site, Cr2+ is bonded in a bent 120 degrees geometry to two equivalent N3- atoms. Both Cr–N bond lengths are 1.80 Å. In the second Cr2+ site, Cr2+ is bonded in a bent 120 degrees geometry to two equivalent N3- atoms. Both Cr–N bond lengths are 1.80 Å. N3- is bonded in a trigonal planar geometry to three Cr2+ atoms.

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Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the tetragonal P4_12_12 space group. The structure is three-dimensional. there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.71 Å) and two longer (1.79 Å) Cr–N bond length. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form distorted corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.66–1.83 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 120 degrees geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a distorted bent 150 degrees geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 is Low Tridymite-like structured and crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.71–1.75 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrN2 by Materials Project

CrN2 is High (Orthorhombic) Tridymite-like structured and crystallizes in the cubic P2_13 space group. The structure is three-dimensional. there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.70 Å) and three longer (1.74 Å) Cr–N bond length. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is three shorter (1.72 Å) and one longer (1.75 Å) Cr–N bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrN2 by Materials Project

CrN2 is High (Orthorhombic) Tridymite-like structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are seven inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is three shorter (1.73 Å) and one longer (1.74 Å) Cr–N bond length. In the third Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. All Cr–N bond lengths are 1.73 Å. In the fourth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.75 Å. In the fifth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.72 Å) and two longer (1.73 Å) Cr–N bond length. In the sixth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. All Cr–N bond lengths are 1.73 Å. In the seventh Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.72 Å) and two longer (1.73 Å) Cr–N bond length. There are eighteen inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the fourth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fifth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the sixth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the seventh N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the eighth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the ninth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the tenth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the eleventh N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the twelfth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the thirteenth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fourteenth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fifteenth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the sixteenth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the seventeenth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the eighteenth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
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Materials Data on CrN2 by Materials Project

CrN2 is Keatite-like structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are five inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. In the third Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. In the fourth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.74 Å. In the fifth Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is one shorter (1.72 Å) and three longer (1.73 Å) Cr–N bond length. There are twelve inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a linear geometry to two Cr6+ atoms. In the fifth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the sixth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the seventh N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the eighth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the ninth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms. In the tenth N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the eleventh N3- site, N3- is bonded in a linear geometry to two equivalent Cr6+ atoms. In the twelfth N3- site, N3- is bonded in a bent 150 degrees geometry to two Cr6+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.72–1.77 Å. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There are a spread of Cr–N bond distances ranging from 1.73–1.75 Å. There are five inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 150 degrees geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 120 degrees geometry to two Cr6+ atoms. In the fourth N3- site, N3- is bonded in a bent 120 degrees geometry to two Cr6+ atoms. In the fifth N3- site, N3- is bonded in a distorted bent 150 degrees geometry to two Cr6+ atoms.

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