Er2Ni2Sn crystallizes in the tetragonal P4/mbm space group. Er(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Sn(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Ni(1), and two equivalent Sn(1) atoms. Sn(1) is bonded to eight equivalent Er(1) and four equivalent Ni(1) atoms to form a mixture of face and corner-sharing SnEr8Ni4 cuboctahedra.
Er2Ni2Sn crystallizes in the tetragonal P4/mbm space group. Er(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Sn(1) atoms. There are two shorter (2.77 Å) and four longer (2.82 Å) Er(1)-Ni(1) bond lengths. All Er(1)-Sn(1) bond lengths are 3.23 Å. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Ni(1), and two equivalent Sn(1) atoms. The Ni(1)-Ni(1) bond length is 2.48 Å. Both Ni(1)-Sn(1) bond lengths are 2.89 Å. Sn(1) is bonded to eight equivalent Er(1) and four equivalent Ni(1) atoms to form a mixture of face and corner-sharing SnEr8Ni4 cuboctahedra.