Cu3As is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Cu(1) is bonded to eight equivalent Cu(1) and four equivalent As(1) atoms to form CuCu8As4 cuboctahedra that share corners with twelve equivalent Cu(1)Cu8As4 cuboctahedra, edges with eight equivalent As(1)Cu12 cuboctahedra, edges with sixteen equivalent Cu(1)Cu8As4 cuboctahedra, faces with four equivalent As(1)Cu12 cuboctahedra, and faces with fourteen equivalent Cu(1)Cu8As4 cuboctahedra. As(1) is bonded to twelve equivalent Cu(1) atoms to form AsCu12 cuboctahedra that share corners with twelve equivalent As(1)Cu12 cuboctahedra, edges with twenty-four equivalent Cu(1)Cu8As4 cuboctahedra, faces with six equivalent As(1)Cu12 cuboctahedra, and faces with twelve equivalent Cu(1)Cu8As4 cuboctahedra.
Cu3As is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Cu(1) is bonded to eight equivalent Cu(1) and four equivalent As(1) atoms to form CuCu8As4 cuboctahedra that share corners with twelve equivalent Cu(1)Cu8As4 cuboctahedra, edges with eight equivalent As(1)Cu12 cuboctahedra, edges with sixteen equivalent Cu(1)Cu8As4 cuboctahedra, faces with four equivalent As(1)Cu12 cuboctahedra, and faces with fourteen equivalent Cu(1)Cu8As4 cuboctahedra. All Cu(1)-Cu(1) bond lengths are 2.62 Å. All Cu(1)-As(1) bond lengths are 2.62 Å. As(1) is bonded to twelve equivalent Cu(1) atoms to form AsCu12 cuboctahedra that share corners with twelve equivalent As(1)Cu12 cuboctahedra, edges with twenty-four equivalent Cu(1)Cu8As4 cuboctahedra, faces with six equivalent As(1)Cu12 cuboctahedra, and faces with twelve equivalent Cu(1)Cu8As4 cuboctahedra.