ErCd2 crystallizes in the monoclinic C2/m space group. Er(1) is bonded to two equivalent Er(1) and six equivalent Cd(1) atoms to form a mixture of distorted corner and edge-sharing ErEr2Cd6 hexagonal bipyramids. Cd(1) is bonded in a 8-coordinate geometry to three equivalent Er(1) and five equivalent Cd(1) atoms.
ErCd2 crystallizes in the monoclinic C2/m space group. Er(1) is bonded to two equivalent Er(1) and six equivalent Cd(1) atoms to form a mixture of distorted corner and edge-sharing ErEr2Cd6 hexagonal bipyramids. Both Er(1)-Er(1) bond lengths are 3.28 Å. There are two shorter (3.24 Å) and four longer (3.26 Å) Er(1)-Cd(1) bond lengths. Cd(1) is bonded in a 8-coordinate geometry to three equivalent Er(1) and five equivalent Cd(1) atoms. There are a spread of Cd(1)-Cd(1) bond distances ranging from 3.25-3.39 Å.