La3Ge3Br2 crystallizes in the triclinic P-1 space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), four equivalent Ge(1), and one Br(2) atom. In the second La site, La(2) is bonded in a 8-coordinate geometry to two equivalent Ge(1), two equivalent Ge(3), one Br(1), and three equivalent Br(2) atoms. In the third La site, La(3) is bonded in a 9-coordinate geometry to two equivalent Ge(3), four equivalent Ge(2), and three equivalent Br(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent La(2), four equivalent La(1), one Ge(1), and one Ge(3) atom. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent La(1), four equivalent La(3), one Ge(2), and one Ge(3) atom. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent La(1), two equivalent La(2), two equivalent La(3), one Ge(1), and one Ge(2) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to one La(2) and three equivalent La(3) atoms. In the second Br site, Br(2) is bonded to one La(1) and three equivalent La(2) atoms to form a mixture of distorted edge and corner-sharing BrLa4 tetrahedra.
La3Ge3Br2 crystallizes in the triclinic P-1 space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), four equivalent Ge(1), and one Br(2) atom. Both La(1)-Ge(2) bond lengths are 3.19 Å. Both La(1)-Ge(3) bond lengths are 3.28 Å. There are a spread of La(1)-Ge(1) bond distances ranging from 3.20-3.27 Å. The La(1)-Br(2) bond length is 3.16 Å. In the second La site, La(2) is bonded in a 8-coordinate geometry to two equivalent Ge(1), two equivalent Ge(3), one Br(1), and three equivalent Br(2) atoms. Both La(2)-Ge(1) bond lengths are 3.09 Å. Both La(2)-Ge(3) bond lengths are 3.17 Å. The La(2)-Br(1) bond length is 3.02 Å. There is one shorter (3.12 Å) and two longer (3.19 Å) La(2)-Br(2) bond lengths. In the third La site, La(3) is bonded in a 9-coordinate geometry to two equivalent Ge(3), four equivalent Ge(2), and three equivalent Br(1) atoms. Both La(3)-Ge(3) bond lengths are 3.13 Å. There are two shorter (3.18 Å) and two longer (3.41 Å) La(3)-Ge(2) bond lengths. There are two shorter (3.19 Å) and one longer (3.38 Å) La(3)-Br(1) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent La(2), four equivalent La(1), one Ge(1), and one Ge(3) atom. The Ge(1)-Ge(1) bond length is 2.58 Å. The Ge(1)-Ge(3) bond length is 2.55 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent La(1), four equivalent La(3), one Ge(2), and one Ge(3) atom. The Ge(2)-Ge(2) bond length is 2.56 Å. The Ge(2)-Ge(3) bond length is 2.57 Å. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent La(1), two equivalent La(2), two equivalent La(3), one Ge(1), and one Ge(2) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to one La(2) and three equivalent La(3) atoms. In the second Br site, Br(2) is bonded to one La(1) and three equivalent La(2) atoms to form a mixture of distorted edge and corner-sharing BrLa4 tetrahedra.