Tb3Rh4Ge13 crystallizes in the cubic Pm-3n space group. Tb(1) is bonded in a 16-coordinate geometry to four equivalent Rh(1) and twelve equivalent Ge(2) atoms. Rh(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Tb(1), two equivalent Rh(1), one Ge(1), and one Ge(2) atom. In the second Ge site, Ge(1) is bonded in a cuboctahedral geometry to twelve equivalent Ge(2) atoms.
Tb3Rh4Ge13 crystallizes in the cubic Pm-3n space group. Tb(1) is bonded in a 16-coordinate geometry to four equivalent Rh(1) and twelve equivalent Ge(2) atoms. All Tb(1)-Rh(1) bond lengths are 3.20 Å. There are eight shorter (3.14 Å) and four longer (3.24 Å) Tb(1)-Ge(2) bond lengths. Rh(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Ge(2) atoms. All Rh(1)-Ge(2) bond lengths are 2.51 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Tb(1), two equivalent Rh(1), one Ge(1), and one Ge(2) atom. The Ge(2)-Ge(1) bond length is 3.11 Å. The Ge(2)-Ge(2) bond length is 2.67 Å. In the second Ge site, Ge(1) is bonded in a cuboctahedral geometry to twelve equivalent Ge(2) atoms.