Np2SO2 crystallizes in the trigonal P-3m1 space group. Np(1) is bonded in a 7-coordinate geometry to three equivalent S(1) and four equivalent O(1) atoms. S(1) is bonded to six equivalent Np(1) atoms to form SNp6 octahedra that share corners with twelve equivalent O(1)Np4 tetrahedra, edges with six equivalent S(1)Np6 octahedra, and edges with six equivalent O(1)Np4 tetrahedra. O(1) is bonded to four equivalent Np(1) atoms to form ONp4 tetrahedra that share corners with six equivalent S(1)Np6 octahedra, corners with six equivalent O(1)Np4 tetrahedra, edges with three equivalent S(1)Np6 octahedra, and edges with three equivalent O(1)Np4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-51°.
Np2SO2 crystallizes in the trigonal P-3m1 space group. Np(1) is bonded in a 7-coordinate geometry to three equivalent S(1) and four equivalent O(1) atoms. All Np(1)-S(1) bond lengths are 2.95 Å. There is one shorter (2.32 Å) and three longer (2.39 Å) Np(1)-O(1) bond lengths. S(1) is bonded to six equivalent Np(1) atoms to form SNp6 octahedra that share corners with twelve equivalent O(1)Np4 tetrahedra, edges with six equivalent S(1)Np6 octahedra, and edges with six equivalent O(1)Np4 tetrahedra. O(1) is bonded to four equivalent Np(1) atoms to form ONp4 tetrahedra that share corners with six equivalent S(1)Np6 octahedra, corners with six equivalent O(1)Np4 tetrahedra, edges with three equivalent S(1)Np6 octahedra, and edges with three equivalent O(1)Np4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-51°.