Materials Data on NpSO by Materials Project
NpOS is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Np4+ is bonded in a 9-coordinate geometry to five equivalent S2- and four equivalent O2- atoms. There are one shorter (2.91 Å) and four longer (2.92 Å) Np–S bond lengths. All Np–O bond lengths are 2.31 Å. S2- is bonded in a 5-coordinate geometry to five equivalent Np4+ atoms. O2- is bonded to four equivalent Np4+ atoms to form a mixture of edge and corner-sharing ONp4 tetrahedra.
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