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DOE OSTI · 1274964

Materials Data on Nb4N3 by Materials Project

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Abstract

Nb4N3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Nb+2.25+ sites. In the first Nb+2.25+ site, Nb+2.25+ is bonded in a square co-planar geometry to four N3- atoms. There are two shorter (2.18 Å) and two longer (2.21 Å) Nb–N bond lengths. In the second Nb+2.25+ site, Nb+2.25+ is bonded to five N3- atoms to form a mixture of edge and corner-sharing NbN5 square pyramids. All Nb–N bond lengths are 2.21 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to six Nb+2.25+ atoms to form a mixture of edge and corner-sharing NNb6 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second N3- site, N3- is bonded to six Nb+2.25+ atoms to form a mixture of edge and corner-sharing NNb6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°.

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36 MATERIALS SCIENCEcrystal structureN-NbNb4N3

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2020-07-16. Materials Data on Nb4N3 by Materials Project. https://doi.org/10.17188/1274964

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