Li(ErGe)4 crystallizes in the orthorhombic Pnma space group. Li(1) is bonded in a 3-coordinate geometry to one Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to one Ge(2), two equivalent Ge(1), and three equivalent Ge(3) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to one Ge(1), two equivalent Ge(2), and four equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Li(1), two equivalent Er(2), four equivalent Er(1), and one Ge(2) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Li(1), two equivalent Er(1), four equivalent Er(2), and one Ge(1) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Li(1), three equivalent Er(1), four equivalent Er(2), and one Ge(3) atom.
Li(ErGe)4 crystallizes in the orthorhombic Pnma space group. Li(1) is bonded in a 3-coordinate geometry to one Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Li(1)-Ge(1) bond length is 2.66 Å. There is one shorter (2.70 Å) and one longer (2.80 Å) Li(1)-Ge(2) bond length. Both Li(1)-Ge(3) bond lengths are 3.13 Å. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to one Ge(2), two equivalent Ge(1), and three equivalent Ge(3) atoms. The Er(1)-Ge(2) bond length is 2.98 Å. There is one shorter (2.86 Å) and one longer (2.90 Å) Er(1)-Ge(1) bond length. There are a spread of Er(1)-Ge(3) bond distances ranging from 2.81-2.94 Å. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to one Ge(1), two equivalent Ge(2), and four equivalent Ge(3) atoms. The Er(2)-Ge(1) bond length is 3.04 Å. There is one shorter (2.94 Å) and one longer (3.08 Å) Er(2)-Ge(2) bond length. There are a spread of Er(2)-Ge(3) bond distances ranging from 2.93-3.35 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Li(1), two equivalent Er(2), four equivalent Er(1), and one Ge(2) atom. The Ge(1)-Ge(2) bond length is 2.52 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Li(1), two equivalent Er(1), four equivalent Er(2), and one Ge(1) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Li(1), three equivalent Er(1), four equivalent Er(2), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.64 Å.