Li3Er crystallizes in the hexagonal P6_3/mmc space group. Li(1) is bonded in a 10-coordinate geometry to six equivalent Li(1) and four equivalent Er(1) atoms. Er(1) is bonded to twelve equivalent Li(1) atoms to form a mixture of face and corner-sharing ErLi12 cuboctahedra.
Li3Er crystallizes in the hexagonal P6_3/mmc space group. Li(1) is bonded in a 10-coordinate geometry to six equivalent Li(1) and four equivalent Er(1) atoms. There are two shorter (2.96 Å) and four longer (3.05 Å) Li(1)-Li(1) bond lengths. All Li(1)-Er(1) bond lengths are 3.24 Å. Er(1) is bonded to twelve equivalent Li(1) atoms to form a mixture of face and corner-sharing ErLi12 cuboctahedra.