NpSn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to twelve equivalent Sn(1) atoms to form NpSn12 cuboctahedra that share corners with twelve equivalent Np(1)Sn12 cuboctahedra, edges with twenty-four equivalent Sn(1)Np4Sn8 cuboctahedra, faces with six equivalent Np(1)Sn12 cuboctahedra, and faces with twelve equivalent Sn(1)Np4Sn8 cuboctahedra. Sn(1) is bonded to four equivalent Np(1) and eight equivalent Sn(1) atoms to form distorted SnNp4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Np4Sn8 cuboctahedra, edges with eight equivalent Np(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Np4Sn8 cuboctahedra, faces with four equivalent Np(1)Sn12 cuboctahedra, and faces with fourteen equivalent Sn(1)Np4Sn8 cuboctahedra.
NpSn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to twelve equivalent Sn(1) atoms to form NpSn12 cuboctahedra that share corners with twelve equivalent Np(1)Sn12 cuboctahedra, edges with twenty-four equivalent Sn(1)Np4Sn8 cuboctahedra, faces with six equivalent Np(1)Sn12 cuboctahedra, and faces with twelve equivalent Sn(1)Np4Sn8 cuboctahedra. All Np(1)-Sn(1) bond lengths are 3.32 Å. Sn(1) is bonded to four equivalent Np(1) and eight equivalent Sn(1) atoms to form distorted SnNp4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Np4Sn8 cuboctahedra, edges with eight equivalent Np(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Np4Sn8 cuboctahedra, faces with four equivalent Np(1)Sn12 cuboctahedra, and faces with fourteen equivalent Sn(1)Np4Sn8 cuboctahedra. All Sn(1)-Sn(1) bond lengths are 3.32 Å.