NpOSe is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Np(1) is bonded in a 4-coordinate geometry to five equivalent Se(1) and four equivalent O(1) atoms. Se(1) is bonded in a 5-coordinate geometry to five equivalent Np(1) atoms. O(1) is bonded to four equivalent Np(1) atoms to form a mixture of corner and edge-sharing ONp4 tetrahedra.
NpOSe is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Np(1) is bonded in a 4-coordinate geometry to five equivalent Se(1) and four equivalent O(1) atoms. There are four shorter (3.04 Å) and one longer (3.16 Å) Np(1)-Se(1) bond length. All Np(1)-O(1) bond lengths are 2.32 Å. Se(1) is bonded in a 5-coordinate geometry to five equivalent Np(1) atoms. O(1) is bonded to four equivalent Np(1) atoms to form a mixture of corner and edge-sharing ONp4 tetrahedra.