ErCd2 crystallizes in the hexagonal P6/mmm space group. Er(1) is bonded to twelve equivalent Cd(1) atoms to form a mixture of distorted edge and face-sharing ErCd12 cuboctahedra. Cd(1) is bonded in a 11-coordinate geometry to six equivalent Er(1) and five equivalent Cd(1) atoms.
ErCd2 crystallizes in the hexagonal P6/mmm space group. Er(1) is bonded to twelve equivalent Cd(1) atoms to form a mixture of distorted edge and face-sharing ErCd12 cuboctahedra. All Er(1)-Cd(1) bond lengths are 3.30 Å. Cd(1) is bonded in a 11-coordinate geometry to six equivalent Er(1) and five equivalent Cd(1) atoms. There are three shorter (2.82 Å) and two longer (3.44 Å) Cd(1)-Cd(1) bond lengths.