ErAgGe crystallizes in the hexagonal P-62m space group. Er(1) is bonded in a 11-coordinate geometry to six equivalent Ag(1), one Ge(1), and four equivalent Ge(2) atoms. Ag(1) is bonded in a 12-coordinate geometry to six equivalent Er(1), two equivalent Ag(1), two equivalent Ge(1), and two equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to three equivalent Er(1) and six equivalent Ag(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Er(1) and three equivalent Ag(1) atoms.
ErAgGe crystallizes in the hexagonal P-62m space group. Er(1) is bonded in a 11-coordinate geometry to six equivalent Ag(1), one Ge(1), and four equivalent Ge(2) atoms. There are two shorter (3.14 Å) and four longer (3.31 Å) Er(1)-Ag(1) bond lengths. The Er(1)-Ge(1) bond length is 2.94 Å. All Er(1)-Ge(2) bond lengths are 2.98 Å. Ag(1) is bonded in a 12-coordinate geometry to six equivalent Er(1), two equivalent Ag(1), two equivalent Ge(1), and two equivalent Ge(2) atoms. Both Ag(1)-Ag(1) bond lengths are 3.08 Å. Both Ag(1)-Ge(1) bond lengths are 2.74 Å. Both Ag(1)-Ge(2) bond lengths are 2.69 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to three equivalent Er(1) and six equivalent Ag(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Er(1) and three equivalent Ag(1) atoms.