Er6RuTe2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to one Ru(1) and four equivalent Te(1) atoms. In the second Er site, Er(2) is bonded in a 4-coordinate geometry to two equivalent Ru(1) and two equivalent Te(1) atoms. Ru(1) is bonded in a 9-coordinate geometry to three equivalent Er(1) and six equivalent Er(2) atoms. Te(1) is bonded in a 9-coordinate geometry to three equivalent Er(2) and six equivalent Er(1) atoms.
Er6RuTe2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to one Ru(1) and four equivalent Te(1) atoms. The Er(1)-Ru(1) bond length is 3.20 Å. All Er(1)-Te(1) bond lengths are 3.23 Å. In the second Er site, Er(2) is bonded in a 4-coordinate geometry to two equivalent Ru(1) and two equivalent Te(1) atoms. Both Er(2)-Ru(1) bond lengths are 2.79 Å. Both Er(2)-Te(1) bond lengths are 3.20 Å. Ru(1) is bonded in a 9-coordinate geometry to three equivalent Er(1) and six equivalent Er(2) atoms. Te(1) is bonded in a 9-coordinate geometry to three equivalent Er(2) and six equivalent Er(1) atoms.