Tb3In is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tb(1) is bonded to eight equivalent Tb(1) and four equivalent In(1) atoms to form distorted TbTb8In4 cuboctahedra that share corners with four equivalent In(1)Tb12 cuboctahedra, corners with fourteen equivalent Tb(1)Tb8In4 cuboctahedra, edges with six equivalent In(1)Tb12 cuboctahedra, edges with twelve equivalent Tb(1)Tb8In4 cuboctahedra, faces with four equivalent In(1)Tb12 cuboctahedra, and faces with sixteen equivalent Tb(1)Tb8In4 cuboctahedra. In(1) is bonded to twelve equivalent Tb(1) atoms to form InTb12 cuboctahedra that share corners with six equivalent In(1)Tb12 cuboctahedra, corners with twelve equivalent Tb(1)Tb8In4 cuboctahedra, edges with eighteen equivalent Tb(1)Tb8In4 cuboctahedra, faces with eight equivalent In(1)Tb12 cuboctahedra, and faces with twelve equivalent Tb(1)Tb8In4 cuboctahedra.
Tb3In is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tb(1) is bonded to eight equivalent Tb(1) and four equivalent In(1) atoms to form distorted TbTb8In4 cuboctahedra that share corners with four equivalent In(1)Tb12 cuboctahedra, corners with fourteen equivalent Tb(1)Tb8In4 cuboctahedra, edges with six equivalent In(1)Tb12 cuboctahedra, edges with twelve equivalent Tb(1)Tb8In4 cuboctahedra, faces with four equivalent In(1)Tb12 cuboctahedra, and faces with sixteen equivalent Tb(1)Tb8In4 cuboctahedra. There are a spread of Tb(1)-Tb(1) bond distances ranging from 3.32-3.54 Å. There are two shorter (3.41 Å) and two longer (3.43 Å) Tb(1)-In(1) bond lengths. In(1) is bonded to twelve equivalent Tb(1) atoms to form InTb12 cuboctahedra that share corners with six equivalent In(1)Tb12 cuboctahedra, corners with twelve equivalent Tb(1)Tb8In4 cuboctahedra, edges with eighteen equivalent Tb(1)Tb8In4 cuboctahedra, faces with eight equivalent In(1)Tb12 cuboctahedra, and faces with twelve equivalent Tb(1)Tb8In4 cuboctahedra.