Tb3(RhGe)2 crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to four equivalent Rh(1), two equivalent Ge(2), and three equivalent Ge(1) atoms. In the second Tb site, Tb(2) is bonded in a 8-coordinate geometry to four equivalent Rh(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. Rh(1) is bonded in a 9-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one 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 Tb(1), four equivalent Tb(2), and two equivalent Rh(1) atoms. In the second Ge site, Ge(2) is bonded in a 12-coordinate geometry to two equivalent Tb(1), six equivalent Tb(2), and four equivalent Rh(1) atoms.
Tb3(RhGe)2 crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to four equivalent Rh(1), two equivalent Ge(2), and three equivalent Ge(1) atoms. There are two shorter (3.03 Å) and two longer (3.05 Å) Tb(1)-Rh(1) bond lengths. Both Tb(1)-Ge(2) bond lengths are 3.32 Å. There are two shorter (3.01 Å) and one longer (3.05 Å) Tb(1)-Ge(1) bond length. In the second Tb site, Tb(2) is bonded in a 8-coordinate geometry to four equivalent Rh(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. There are a spread of Tb(2)-Rh(1) bond distances ranging from 2.88-3.11 Å. There is one shorter (2.98 Å) and one longer (3.03 Å) Tb(2)-Ge(1) bond length. There are a spread of Tb(2)-Ge(2) bond distances ranging from 3.22-3.35 Å. Rh(1) is bonded in a 9-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Ge(1), and two equivalent Ge(2) atoms. The Rh(1)-Ge(1) bond length is 2.55 Å. There is one shorter (2.58 Å) and one longer (2.60 Å) Rh(1)-Ge(2) bond length. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1), four equivalent Tb(2), and two equivalent Rh(1) atoms. In the second Ge site, Ge(2) is bonded in a 12-coordinate geometry to two equivalent Tb(1), six equivalent Tb(2), and four equivalent Rh(1) atoms.