Lu3In is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Lu(1) is bonded to eight equivalent Lu(1) and four equivalent In(1) atoms to form distorted LuLu8In4 cuboctahedra that share corners with four equivalent In(1)Lu12 cuboctahedra, corners with fourteen equivalent Lu(1)Lu8In4 cuboctahedra, edges with six equivalent In(1)Lu12 cuboctahedra, edges with twelve equivalent Lu(1)Lu8In4 cuboctahedra, faces with four equivalent In(1)Lu12 cuboctahedra, and faces with sixteen equivalent Lu(1)Lu8In4 cuboctahedra. In(1) is bonded to twelve equivalent Lu(1) atoms to form InLu12 cuboctahedra that share corners with six equivalent In(1)Lu12 cuboctahedra, corners with twelve equivalent Lu(1)Lu8In4 cuboctahedra, edges with eighteen equivalent Lu(1)Lu8In4 cuboctahedra, faces with eight equivalent In(1)Lu12 cuboctahedra, and faces with twelve equivalent Lu(1)Lu8In4 cuboctahedra.
Lu3In is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. Lu(1) is bonded to eight equivalent Lu(1) and four equivalent In(1) atoms to form distorted LuLu8In4 cuboctahedra that share corners with four equivalent In(1)Lu12 cuboctahedra, corners with fourteen equivalent Lu(1)Lu8In4 cuboctahedra, edges with six equivalent In(1)Lu12 cuboctahedra, edges with twelve equivalent Lu(1)Lu8In4 cuboctahedra, faces with four equivalent In(1)Lu12 cuboctahedra, and faces with sixteen equivalent Lu(1)Lu8In4 cuboctahedra. There are a spread of Lu(1)-Lu(1) bond distances ranging from 3.29-3.40 Å. There are two shorter (3.33 Å) and two longer (3.34 Å) Lu(1)-In(1) bond lengths. In(1) is bonded to twelve equivalent Lu(1) atoms to form InLu12 cuboctahedra that share corners with six equivalent In(1)Lu12 cuboctahedra, corners with twelve equivalent Lu(1)Lu8In4 cuboctahedra, edges with eighteen equivalent Lu(1)Lu8In4 cuboctahedra, faces with eight equivalent In(1)Lu12 cuboctahedra, and faces with twelve equivalent Lu(1)Lu8In4 cuboctahedra.