TmLa(IrGe2)2 crystallizes in the orthorhombic Immm space group. Tm(1) is bonded in a 15-coordinate geometry to six equivalent Ir(1), one Ge(2), two equivalent Ge(3), and six equivalent Ge(1) atoms. La(1) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Ge(1), four equivalent Ge(2), and four equivalent Ge(3) atoms. Ir(1) is bonded in a 10-coordinate geometry to three equivalent Tm(1), two equivalent La(1), one Ge(2), one Ge(3), and three equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to three equivalent Tm(1), one La(1), three equivalent Ir(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 2-coordinate geometry to one Tm(1), four equivalent La(1), and two equivalent Ir(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), four equivalent La(1), two equivalent Ir(1), and one Ge(3) atom.
TmLa(IrGe2)2 crystallizes in the orthorhombic Immm space group. Tm(1) is bonded in a 15-coordinate geometry to six equivalent Ir(1), one Ge(2), two equivalent Ge(3), and six equivalent Ge(1) atoms. There are two shorter (3.20 Å) and four longer (3.25 Å) Tm(1)-Ir(1) bond lengths. The Tm(1)-Ge(2) bond length is 3.47 Å. Both Tm(1)-Ge(3) bond lengths are 2.98 Å. There are four shorter (2.95 Å) and two longer (3.08 Å) Tm(1)-Ge(1) bond lengths. La(1) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Ge(1), four equivalent Ge(2), and four equivalent Ge(3) atoms. All La(1)-Ir(1) bond lengths are 3.25 Å. Both La(1)-Ge(1) bond lengths are 3.40 Å. All La(1)-Ge(2) bond lengths are 3.42 Å. All La(1)-Ge(3) bond lengths are 3.30 Å. Ir(1) is bonded in a 10-coordinate geometry to three equivalent Tm(1), two equivalent La(1), one Ge(2), one Ge(3), and three equivalent Ge(1) atoms. The Ir(1)-Ge(2) bond length is 2.47 Å. The Ir(1)-Ge(3) bond length is 2.50 Å. There are two shorter (2.48 Å) and one longer (2.57 Å) Ir(1)-Ge(1) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to three equivalent Tm(1), one La(1), three equivalent Ir(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.69 Å. In the second Ge site, Ge(2) is bonded in a 2-coordinate geometry to one Tm(1), four equivalent La(1), and two equivalent Ir(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), four equivalent La(1), two equivalent Ir(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.60 Å.