Er2Rh3Ge5 crystallizes in the monoclinic C2/c space group. Er(1) is bonded in a 16-coordinate geometry to two equivalent Rh(1), four equivalent Rh(2), two equivalent Ge(2), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(1) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 6-coordinate geometry to four equivalent Er(1), one Ge(2), one Ge(4), and four equivalent Ge(1) atoms. In the second Rh site, Rh(2) is bonded in a 5-coordinate geometry to four equivalent Er(1), one Ge(1), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Rh(2), two equivalent Rh(1), one Ge(2), and one Ge(4) atom. In the second Ge site, Ge(2) is bonded in a 3-coordinate geometry to four equivalent Er(1), one Rh(1), two equivalent Rh(2), two equivalent Ge(1), and two equivalent Ge(4) atoms. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to four equivalent Er(1) and four equivalent Rh(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 11-coordinate geometry to four equivalent Er(1), one Rh(1), two equivalent Rh(2), two equivalent Ge(1), and two equivalent Ge(2) atoms.
Er2Rh3Ge5 crystallizes in the monoclinic C2/c space group. Er(1) is bonded in a 16-coordinate geometry to two equivalent Rh(1), four equivalent Rh(2), two equivalent Ge(2), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(1) atoms. There is one shorter (3.43 Å) and one longer (3.55 Å) Er(1)-Rh(1) bond length. There are a spread of Er(1)-Rh(2) bond distances ranging from 3.14-3.27 Å. There is one shorter (3.11 Å) and one longer (3.35 Å) Er(1)-Ge(2) bond length. There is one shorter (3.04 Å) and one longer (3.34 Å) Er(1)-Ge(3) bond length. There is one shorter (3.12 Å) and one longer (3.26 Å) Er(1)-Ge(4) bond length. There are a spread of Er(1)-Ge(1) bond distances ranging from 3.01-3.26 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 6-coordinate geometry to four equivalent Er(1), one Ge(2), one Ge(4), and four equivalent Ge(1) atoms. The Rh(1)-Ge(2) bond length is 2.48 Å. The Rh(1)-Ge(4) bond length is 2.70 Å. There are two shorter (2.47 Å) and two longer (2.54 Å) Rh(1)-Ge(1) bond lengths. In the second Rh site, Rh(2) is bonded in a 5-coordinate geometry to four equivalent Er(1), one Ge(1), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms. The Rh(2)-Ge(1) bond length is 2.38 Å. The Rh(2)-Ge(2) bond length is 2.41 Å. The Rh(2)-Ge(4) bond length is 2.53 Å. There is one shorter (2.45 Å) and one longer (2.48 Å) Rh(2)-Ge(3) bond length. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Rh(2), two equivalent Rh(1), one Ge(2), and one Ge(4) atom. The Ge(1)-Ge(2) bond length is 2.65 Å. The Ge(1)-Ge(4) bond length is 2.66 Å. In the second Ge site, Ge(2) is bonded in a 3-coordinate geometry to four equivalent Er(1), one Rh(1), two equivalent Rh(2), two equivalent Ge(1), and two equivalent Ge(4) atoms. Both Ge(2)-Ge(4) bond lengths are 2.91 Å. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to four equivalent Er(1) and four equivalent Rh(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 11-coordinate geometry to four equivalent Er(1), one Rh(1), two equivalent Rh(2), two equivalent Ge(1), and two equivalent Ge(2) atoms.