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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Np3Se4 by Materials Project

Np3Se4 crystallizes in the cubic I-43d space group. The structure is three-dimensional. Np is bonded to eight equivalent Se atoms to form a mixture of distorted edge, face, and corner-sharing NpSe8 hexagonal bipyramids. There are four shorter (2.85 Å) and four longer (2.97 Å) Np–Se bond lengths. Se is bonded to six equivalent Np atoms to form a mixture of distorted edge, face, and corner-sharing SeNp6 octahedra. The corner-sharing octahedra tilt angles range from 16–50°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NpSe by Materials Project

NpSe is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Np is bonded to six equivalent Se atoms to form a mixture of edge and corner-sharing NpSe6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Np–Se bond lengths are 2.90 Å. Se is bonded to six equivalent Np atoms to form a mixture of edge and corner-sharing SeNp6 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗