Np3In is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to eight equivalent Np(1) and four equivalent In(1) atoms to form distorted NpNp8In4 cuboctahedra that share corners with twelve equivalent Np(1)Np8In4 cuboctahedra, edges with eight equivalent In(1)Np12 cuboctahedra, edges with sixteen equivalent Np(1)Np8In4 cuboctahedra, faces with four equivalent In(1)Np12 cuboctahedra, and faces with fourteen equivalent Np(1)Np8In4 cuboctahedra. In(1) is bonded to twelve equivalent Np(1) atoms to form InNp12 cuboctahedra that share corners with twelve equivalent In(1)Np12 cuboctahedra, edges with twenty-four equivalent Np(1)Np8In4 cuboctahedra, faces with six equivalent In(1)Np12 cuboctahedra, and faces with twelve equivalent Np(1)Np8In4 cuboctahedra.
Np3In is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Np(1) is bonded to eight equivalent Np(1) and four equivalent In(1) atoms to form distorted NpNp8In4 cuboctahedra that share corners with twelve equivalent Np(1)Np8In4 cuboctahedra, edges with eight equivalent In(1)Np12 cuboctahedra, edges with sixteen equivalent Np(1)Np8In4 cuboctahedra, faces with four equivalent In(1)Np12 cuboctahedra, and faces with fourteen equivalent Np(1)Np8In4 cuboctahedra. All Np(1)-Np(1) bond lengths are 3.24 Å. All Np(1)-In(1) bond lengths are 3.24 Å. In(1) is bonded to twelve equivalent Np(1) atoms to form InNp12 cuboctahedra that share corners with twelve equivalent In(1)Np12 cuboctahedra, edges with twenty-four equivalent Np(1)Np8In4 cuboctahedra, faces with six equivalent In(1)Np12 cuboctahedra, and faces with twelve equivalent Np(1)Np8In4 cuboctahedra.