La9B3C6Br5 crystallizes in the orthorhombic Pmmn space group. There are five inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to three equivalent C(2) and three equivalent Br(1) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to one C(1), two equivalent C(3), one Br(1), and two equivalent Br(2) atoms. In the third La site, La(3) is bonded in a 9-coordinate geometry to two equivalent B(1), two equivalent C(2), two equivalent C(3), one Br(1), and two equivalent Br(2) atoms. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one C(3), two equivalent C(1), one Br(2), and two equivalent Br(3) atoms. In the fifth La site, La(5) is bonded in a 10-coordinate geometry to two equivalent B(2), four equivalent C(1), two equivalent Br(2), and two equivalent Br(3) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a bent 150 degrees geometry to two equivalent La(3), one C(2), and one C(3) atom. In the second B site, B(2) is bonded in a bent 150 degrees geometry to two equivalent La(5) and two equivalent C(1) atoms. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 1-coordinate geometry to one La(2), two equivalent La(4), two equivalent La(5), and one B(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to two equivalent La(3), three equivalent La(1), and one B(1) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one La(4), two equivalent La(2), two equivalent La(3), and one B(1) atom. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded to one La(2), one La(3), and three equivalent La(1) atoms to form a mixture of edge and corner-sharing BrLa5 trigonal bipyramids. In the second Br site, Br(2) is bonded in a 6-coordinate geometry to one La(4), one La(5), two equivalent La(2), and two equivalent La(3) atoms. In the third Br site, Br(3) is bonded in a 6-coordinate geometry to two equivalent La(5) and four equivalent La(4) atoms.
La9B3C6Br5 crystallizes in the orthorhombic Pmmn space group. There are five inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to three equivalent C(2) and three equivalent Br(1) atoms. There is one shorter (2.50 Å) and two longer (2.63 Å) La(1)-C(2) bond lengths. All La(1)-Br(1) bond lengths are 3.29 Å. In the second La site, La(2) is bonded in a 6-coordinate geometry to one C(1), two equivalent C(3), one Br(1), and two equivalent Br(2) atoms. The La(2)-C(1) bond length is 2.53 Å. Both La(2)-C(3) bond lengths are 2.61 Å. The La(2)-Br(1) bond length is 3.35 Å. Both La(2)-Br(2) bond lengths are 3.29 Å. In the third La site, La(3) is bonded in a 9-coordinate geometry to two equivalent B(1), two equivalent C(2), two equivalent C(3), one Br(1), and two equivalent Br(2) atoms. Both La(3)-B(1) bond lengths are 2.68 Å. Both La(3)-C(2) bond lengths are 2.75 Å. Both La(3)-C(3) bond lengths are 2.79 Å. The La(3)-Br(1) bond length is 3.15 Å. Both La(3)-Br(2) bond lengths are 3.32 Å. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one C(3), two equivalent C(1), one Br(2), and two equivalent Br(3) atoms. The La(4)-C(3) bond length is 2.43 Å. Both La(4)-C(1) bond lengths are 2.66 Å. The La(4)-Br(2) bond length is 3.32 Å. Both La(4)-Br(3) bond lengths are 3.41 Å. In the fifth La site, La(5) is bonded in a 10-coordinate geometry to two equivalent B(2), four equivalent C(1), two equivalent Br(2), and two equivalent Br(3) atoms. Both La(5)-B(2) bond lengths are 2.64 Å. All La(5)-C(1) bond lengths are 2.81 Å. Both La(5)-Br(2) bond lengths are 3.71 Å. Both La(5)-Br(3) bond lengths are 3.30 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a bent 150 degrees geometry to two equivalent La(3), one C(2), and one C(3) atom. The B(1)-C(2) bond length is 1.49 Å. The B(1)-C(3) bond length is 1.49 Å. In the second B site, B(2) is bonded in a bent 150 degrees geometry to two equivalent La(5) and two equivalent C(1) atoms. Both B(2)-C(1) bond lengths are 1.49 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 1-coordinate geometry to one La(2), two equivalent La(4), two equivalent La(5), and one B(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to two equivalent La(3), three equivalent La(1), and one B(1) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one La(4), two equivalent La(2), two equivalent La(3), and one B(1) atom. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded to one La(2), one La(3), and three equivalent La(1) atoms to form a mixture of edge and corner-sharing BrLa5 trigonal bipyramids. In the second Br site, Br(2) is bonded in a 6-coordinate geometry to one La(4), one La(5), two equivalent La(2), and two equivalent La(3) atoms. In the third Br site, Br(3) is bonded in a 6-coordinate geometry to two equivalent La(5) and four equivalent La(4) atoms.