Rh3W crystallizes in the hexagonal P-6m2 space group. W(1) is bonded to six equivalent W(1) and six equivalent Rh(2) atoms to form WRh6W6 cuboctahedra that share corners with six equivalent W(1)Rh6W6 cuboctahedra, corners with twelve equivalent Rh(1)Rh12 cuboctahedra, edges with six equivalent W(1)Rh6W6 cuboctahedra, edges with twelve equivalent Rh(2)Rh9W3 cuboctahedra, faces with two equivalent Rh(1)Rh12 cuboctahedra, faces with six equivalent W(1)Rh6W6 cuboctahedra, and faces with twelve equivalent Rh(2)Rh9W3 cuboctahedra. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to six equivalent Rh(1) and six equivalent Rh(2) atoms to form RhRh12 cuboctahedra that share corners with six equivalent Rh(1)Rh12 cuboctahedra, corners with twelve equivalent W(1)Rh6W6 cuboctahedra, edges with six equivalent Rh(1)Rh12 cuboctahedra, edges with twelve equivalent Rh(2)Rh9W3 cuboctahedra, faces with two equivalent W(1)Rh6W6 cuboctahedra, faces with six equivalent Rh(1)Rh12 cuboctahedra, and faces with twelve equivalent Rh(2)Rh9W3 cuboctahedra. In the second Rh site, Rh(2) is bonded to three equivalent W(1), three equivalent Rh(1), and six equivalent Rh(2) atoms to form RhRh9W3 cuboctahedra that share corners with eighteen equivalent Rh(2)Rh9W3 cuboctahedra, edges with six equivalent W(1)Rh6W6 cuboctahedra, edges with six equivalent Rh(1)Rh12 cuboctahedra, edges with six equivalent Rh(2)Rh9W3 cuboctahedra, faces with six equivalent W(1)Rh6W6 cuboctahedra, faces with six equivalent Rh(1)Rh12 cuboctahedra, and faces with eight equivalent Rh(2)Rh9W3 cuboctahedra.
Rh3W crystallizes in the hexagonal P-6m2 space group. W(1) is bonded to six equivalent W(1) and six equivalent Rh(2) atoms to form WRh6W6 cuboctahedra that share corners with six equivalent W(1)Rh6W6 cuboctahedra, corners with twelve equivalent Rh(1)Rh12 cuboctahedra, edges with six equivalent W(1)Rh6W6 cuboctahedra, edges with twelve equivalent Rh(2)Rh9W3 cuboctahedra, faces with two equivalent Rh(1)Rh12 cuboctahedra, faces with six equivalent W(1)Rh6W6 cuboctahedra, and faces with twelve equivalent Rh(2)Rh9W3 cuboctahedra. All W(1)-W(1) bond lengths are 2.78 Å. All W(1)-Rh(2) bond lengths are 2.69 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to six equivalent Rh(1) and six equivalent Rh(2) atoms to form RhRh12 cuboctahedra that share corners with six equivalent Rh(1)Rh12 cuboctahedra, corners with twelve equivalent W(1)Rh6W6 cuboctahedra, edges with six equivalent Rh(1)Rh12 cuboctahedra, edges with twelve equivalent Rh(2)Rh9W3 cuboctahedra, faces with two equivalent W(1)Rh6W6 cuboctahedra, faces with six equivalent Rh(1)Rh12 cuboctahedra, and faces with twelve equivalent Rh(2)Rh9W3 cuboctahedra. All Rh(1)-Rh(1) bond lengths are 2.78 Å. All Rh(1)-Rh(2) bond lengths are 2.77 Å. In the second Rh site, Rh(2) is bonded to three equivalent W(1), three equivalent Rh(1), and six equivalent Rh(2) atoms to form RhRh9W3 cuboctahedra that share corners with eighteen equivalent Rh(2)Rh9W3 cuboctahedra, edges with six equivalent W(1)Rh6W6 cuboctahedra, edges with six equivalent Rh(1)Rh12 cuboctahedra, edges with six equivalent Rh(2)Rh9W3 cuboctahedra, faces with six equivalent W(1)Rh6W6 cuboctahedra, faces with six equivalent Rh(1)Rh12 cuboctahedra, and faces with eight equivalent Rh(2)Rh9W3 cuboctahedra. All Rh(2)-Rh(2) bond lengths are 2.78 Å.