Tc3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tc(1) is bonded to eight equivalent Tc(1) and four equivalent Ge(1) atoms to form TcTc8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Tc12 cuboctahedra, corners with fourteen equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with six equivalent Ge(1)Tc12 cuboctahedra, edges with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with four equivalent Ge(1)Tc12 cuboctahedra, and faces with sixteen equivalent Tc(1)Tc8Ge4 cuboctahedra. Ge(1) is bonded to twelve equivalent Tc(1) atoms to form GeTc12 cuboctahedra that share corners with six equivalent Ge(1)Tc12 cuboctahedra, corners with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with eighteen equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with eight equivalent Ge(1)Tc12 cuboctahedra, and faces with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra.
Tc3Ge is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tc(1) is bonded to eight equivalent Tc(1) and four equivalent Ge(1) atoms to form TcTc8Ge4 cuboctahedra that share corners with four equivalent Ge(1)Tc12 cuboctahedra, corners with fourteen equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with six equivalent Ge(1)Tc12 cuboctahedra, edges with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with four equivalent Ge(1)Tc12 cuboctahedra, and faces with sixteen equivalent Tc(1)Tc8Ge4 cuboctahedra. There are a spread of Tc(1)-Tc(1) bond distances ranging from 2.69-2.79 Å. There are two shorter (2.72 Å) and two longer (2.74 Å) Tc(1)-Ge(1) bond lengths. Ge(1) is bonded to twelve equivalent Tc(1) atoms to form GeTc12 cuboctahedra that share corners with six equivalent Ge(1)Tc12 cuboctahedra, corners with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra, edges with eighteen equivalent Tc(1)Tc8Ge4 cuboctahedra, faces with eight equivalent Ge(1)Tc12 cuboctahedra, and faces with twelve equivalent Tc(1)Tc8Ge4 cuboctahedra.