NpH2 is Fluorite structured and crystallizes in the cubic Fm-3m space group. Np(1) is bonded in a body-centered cubic geometry to eight equivalent H(1) atoms. H(1) is bonded to four equivalent Np(1) atoms to form a mixture of edge and corner-sharing HNp4 tetrahedra.
NpH2 is Fluorite structured and crystallizes in the cubic Fm-3m space group. Np(1) is bonded in a body-centered cubic geometry to eight equivalent H(1) atoms. All Np(1)-H(1) bond lengths are 2.26 Å. H(1) is bonded to four equivalent Np(1) atoms to form a mixture of edge and corner-sharing HNp4 tetrahedra.