Tm4In(NiGe2)2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent In(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. In the second Tm site, Tm(2) is bonded in a 12-coordinate geometry to three equivalent Ni(1), two equivalent In(1), three equivalent Ge(2), and four equivalent Ge(1) atoms. Ni(1) is bonded in a 8-coordinate geometry to one Tm(1), three equivalent Tm(2), one Ge(1), and three equivalent Ge(2) atoms. In(1) is bonded to four equivalent Tm(1), four equivalent Tm(2), two equivalent Ge(1), and two equivalent Ge(2) atoms to form face-sharing InTm8Ge4 cuboctahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Tm(1), four equivalent Tm(2), one Ni(1), one In(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), three equivalent Ni(1), and one In(1) atom.
Tm4In(NiGe2)2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent In(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. The Tm(1)-Ni(1) bond length is 2.98 Å. Both Tm(1)-In(1) bond lengths are 3.32 Å. Both Tm(1)-Ge(1) bond lengths are 2.88 Å. There is one shorter (2.95 Å) and two longer (3.02 Å) Tm(1)-Ge(2) bond lengths. In the second Tm site, Tm(2) is bonded in a 12-coordinate geometry to three equivalent Ni(1), two equivalent In(1), three equivalent Ge(2), and four equivalent Ge(1) atoms. All Tm(2)-Ni(1) bond lengths are 3.00 Å. Both Tm(2)-In(1) bond lengths are 3.37 Å. There are two shorter (3.00 Å) and one longer (3.32 Å) Tm(2)-Ge(2) bond length. There are two shorter (2.94 Å) and two longer (3.13 Å) Tm(2)-Ge(1) bond lengths. Ni(1) is bonded in a 8-coordinate geometry to one Tm(1), three equivalent Tm(2), one Ge(1), and three equivalent Ge(2) atoms. The Ni(1)-Ge(1) bond length is 2.39 Å. There are two shorter (2.42 Å) and one longer (2.54 Å) Ni(1)-Ge(2) bond length. In(1) is bonded to four equivalent Tm(1), four equivalent Tm(2), two equivalent Ge(1), and two equivalent Ge(2) atoms to form face-sharing InTm8Ge4 cuboctahedra. Both In(1)-Ge(1) bond lengths are 2.85 Å. Both In(1)-Ge(2) bond lengths are 3.05 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Tm(1), four equivalent Tm(2), one Ni(1), one In(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.52 Å. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), three equivalent Ni(1), and one In(1) atom.