TbNiGe2 crystallizes in the orthorhombic Cmcm space group. Tb(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), four equivalent Ge(2), and six equivalent Ge(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ge(1), and four 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 six equivalent Tb(1), one Ni(1), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ni(1) atoms.
TbNiGe2 crystallizes in the orthorhombic Cmcm space group. Tb(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), four equivalent Ge(2), and six equivalent Ge(1) atoms. All Tb(1)-Ni(1) bond lengths are 3.14 Å. There are two shorter (3.12 Å) and two longer (3.13 Å) Tb(1)-Ge(2) bond lengths. There are four shorter (3.11 Å) and two longer (3.24 Å) Tb(1)-Ge(1) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ge(1), and four equivalent Ge(2) atoms. The Ni(1)-Ge(1) bond length is 2.28 Å. There are two shorter (2.36 Å) and two longer (2.37 Å) Ni(1)-Ge(2) bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Tb(1), one Ni(1), and two equivalent Ge(1) atoms. Both Ge(1)-Ge(1) bond lengths are 2.49 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ni(1) atoms.