NpTm3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to twelve equivalent Tm(1) atoms to form NpTm12 cuboctahedra that share corners with twelve equivalent Np(1)Tm12 cuboctahedra, edges with twenty-four equivalent Tm(1)Tm8Np4 cuboctahedra, faces with six equivalent Np(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Np4 cuboctahedra. Tm(1) is bonded to four equivalent Np(1) and eight equivalent Tm(1) atoms to form TmTm8Np4 cuboctahedra that share corners with twelve equivalent Tm(1)Tm8Np4 cuboctahedra, edges with eight equivalent Np(1)Tm12 cuboctahedra, edges with sixteen equivalent Tm(1)Tm8Np4 cuboctahedra, faces with four equivalent Np(1)Tm12 cuboctahedra, and faces with fourteen equivalent Tm(1)Tm8Np4 cuboctahedra.
NpTm3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to twelve equivalent Tm(1) atoms to form NpTm12 cuboctahedra that share corners with twelve equivalent Np(1)Tm12 cuboctahedra, edges with twenty-four equivalent Tm(1)Tm8Np4 cuboctahedra, faces with six equivalent Np(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Np4 cuboctahedra. All Np(1)-Tm(1) bond lengths are 3.45 Å. Tm(1) is bonded to four equivalent Np(1) and eight equivalent Tm(1) atoms to form TmTm8Np4 cuboctahedra that share corners with twelve equivalent Tm(1)Tm8Np4 cuboctahedra, edges with eight equivalent Np(1)Tm12 cuboctahedra, edges with sixteen equivalent Tm(1)Tm8Np4 cuboctahedra, faces with four equivalent Np(1)Tm12 cuboctahedra, and faces with fourteen equivalent Tm(1)Tm8Np4 cuboctahedra. All Tm(1)-Tm(1) bond lengths are 3.45 Å.