Rh3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Rh(1) is bonded to eight equivalent Rh(1) and four equivalent Ge(1) atoms to form distorted RhGe4Rh8 cuboctahedra that share corners with four equivalent Ge(1)Rh12 cuboctahedra, corners with fourteen equivalent Rh(1)Ge4Rh8 cuboctahedra, edges with six equivalent Ge(1)Rh12 cuboctahedra, edges with twelve equivalent Rh(1)Ge4Rh8 cuboctahedra, faces with four equivalent Ge(1)Rh12 cuboctahedra, and faces with sixteen equivalent Rh(1)Ge4Rh8 cuboctahedra. Ge(1) is bonded to twelve equivalent Rh(1) atoms to form GeRh12 cuboctahedra that share corners with six equivalent Ge(1)Rh12 cuboctahedra, corners with twelve equivalent Rh(1)Ge4Rh8 cuboctahedra, edges with eighteen equivalent Rh(1)Ge4Rh8 cuboctahedra, faces with eight equivalent Ge(1)Rh12 cuboctahedra, and faces with twelve equivalent Rh(1)Ge4Rh8 cuboctahedra.
Rh3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Rh(1) is bonded to eight equivalent Rh(1) and four equivalent Ge(1) atoms to form distorted RhGe4Rh8 cuboctahedra that share corners with four equivalent Ge(1)Rh12 cuboctahedra, corners with fourteen equivalent Rh(1)Ge4Rh8 cuboctahedra, edges with six equivalent Ge(1)Rh12 cuboctahedra, edges with twelve equivalent Rh(1)Ge4Rh8 cuboctahedra, faces with four equivalent Ge(1)Rh12 cuboctahedra, and faces with sixteen equivalent Rh(1)Ge4Rh8 cuboctahedra. There are four shorter (2.70 Å) and four longer (2.76 Å) Rh(1)-Rh(1) bond lengths. There are two shorter (2.70 Å) and two longer (2.76 Å) Rh(1)-Ge(1) bond lengths. Ge(1) is bonded to twelve equivalent Rh(1) atoms to form GeRh12 cuboctahedra that share corners with six equivalent Ge(1)Rh12 cuboctahedra, corners with twelve equivalent Rh(1)Ge4Rh8 cuboctahedra, edges with eighteen equivalent Rh(1)Ge4Rh8 cuboctahedra, faces with eight equivalent Ge(1)Rh12 cuboctahedra, and faces with twelve equivalent Rh(1)Ge4Rh8 cuboctahedra.