Tm5Ge4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 6-coordinate geometry to one Ge(3), two equivalent Ge(2), and three equivalent Ge(1) atoms. In the second Tm site, Tm(2) is bonded in a 7-coordinate geometry to one Ge(2), two equivalent Ge(3), and four equivalent Ge(1) atoms. In the third Tm site, Tm(3) is bonded to two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms to form corner-sharing TmGe6 octahedra. The corner-sharing octahedral tilt angles range from 51-53°. There are three inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), two equivalent Tm(3), four equivalent Tm(2), and one Ge(2) atom. In the second Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Tm(3), three equivalent Tm(1), and four equivalent Tm(2) atoms. In the third Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Tm(2), two equivalent Tm(3), four equivalent Tm(1), and one Ge(3) atom.
Tm5Ge4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 6-coordinate geometry to one Ge(3), two equivalent Ge(2), and three equivalent Ge(1) atoms. The Tm(1)-Ge(3) bond length is 2.96 Å. There is one shorter (2.92 Å) and one longer (2.93 Å) Tm(1)-Ge(2) bond length. There are a spread of Tm(1)-Ge(1) bond distances ranging from 2.79-2.91 Å. In the second Tm site, Tm(2) is bonded in a 7-coordinate geometry to one Ge(2), two equivalent Ge(3), and four equivalent Ge(1) atoms. The Tm(2)-Ge(2) bond length is 3.11 Å. There is one shorter (2.92 Å) and one longer (3.14 Å) Tm(2)-Ge(3) bond length. There are a spread of Tm(2)-Ge(1) bond distances ranging from 2.91-3.49 Å. In the third Tm site, Tm(3) is bonded to two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms to form corner-sharing TmGe6 octahedra. The corner-sharing octahedral tilt angles range from 51-53°. Both Tm(3)-Ge(1) bond lengths are 2.96 Å. There is one shorter (2.86 Å) and one longer (3.03 Å) Tm(3)-Ge(2) bond length. There is one shorter (2.87 Å) and one longer (3.00 Å) Tm(3)-Ge(3) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), two equivalent Tm(3), four equivalent Tm(2), and one Ge(2) atom. The Ge(3)-Ge(2) bond length is 2.72 Å. In the second Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Tm(3), three equivalent Tm(1), and four equivalent Tm(2) atoms. In the third Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Tm(2), two equivalent Tm(3), four equivalent Tm(1), and one Ge(3) atom.