LiEu3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Li(1) is bonded to twelve equivalent Eu(1) atoms to form LiEu12 cuboctahedra that share corners with six equivalent Li(1)Eu12 cuboctahedra, corners with twelve equivalent Eu(1)Li4Eu8 cuboctahedra, edges with eighteen equivalent Eu(1)Li4Eu8 cuboctahedra, faces with eight equivalent Li(1)Eu12 cuboctahedra, and faces with twelve equivalent Eu(1)Li4Eu8 cuboctahedra. Eu(1) is bonded to four equivalent Li(1) and eight equivalent Eu(1) atoms to form EuLi4Eu8 cuboctahedra that share corners with four equivalent Li(1)Eu12 cuboctahedra, corners with fourteen equivalent Eu(1)Li4Eu8 cuboctahedra, edges with six equivalent Li(1)Eu12 cuboctahedra, edges with twelve equivalent Eu(1)Li4Eu8 cuboctahedra, faces with four equivalent Li(1)Eu12 cuboctahedra, and faces with sixteen equivalent Eu(1)Li4Eu8 cuboctahedra.
LiEu3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Li(1) is bonded to twelve equivalent Eu(1) atoms to form LiEu12 cuboctahedra that share corners with six equivalent Li(1)Eu12 cuboctahedra, corners with twelve equivalent Eu(1)Li4Eu8 cuboctahedra, edges with eighteen equivalent Eu(1)Li4Eu8 cuboctahedra, faces with eight equivalent Li(1)Eu12 cuboctahedra, and faces with twelve equivalent Eu(1)Li4Eu8 cuboctahedra. There are six shorter (3.79 Å) and six longer (3.80 Å) Li(1)-Eu(1) bond lengths. Eu(1) is bonded to four equivalent Li(1) and eight equivalent Eu(1) atoms to form EuLi4Eu8 cuboctahedra that share corners with four equivalent Li(1)Eu12 cuboctahedra, corners with fourteen equivalent Eu(1)Li4Eu8 cuboctahedra, edges with six equivalent Li(1)Eu12 cuboctahedra, edges with twelve equivalent Eu(1)Li4Eu8 cuboctahedra, faces with four equivalent Li(1)Eu12 cuboctahedra, and faces with sixteen equivalent Eu(1)Li4Eu8 cuboctahedra. There are a spread of Eu(1)-Eu(1) bond distances ranging from 3.74-3.86 Å.