La3B(CBr)2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to two equivalent B(1), one C(2), two equivalent C(1), one Br(2), and two 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(2), and three equivalent Br(2) atoms. In the third La site, La(3) is bonded in a 10-coordinate geometry to two equivalent B(1), two equivalent C(1), two equivalent C(2), one Br(2), and three equivalent Br(1) atoms. B(1) is bonded in a bent 150 degrees geometry to two equivalent La(1), two equivalent La(3), one C(1), and one C(2) atom. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(2), two equivalent La(1), two equivalent La(3), and one B(1) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one La(1), two equivalent La(2), two equivalent La(3), and one B(1) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded to two equivalent La(1) and three equivalent La(3) atoms to form a mixture of distorted edge and corner-sharing BrLa5 trigonal bipyramids. In the second Br site, Br(2) is bonded to one La(1), one La(3), and three equivalent La(2) atoms to form a mixture of distorted edge and corner-sharing BrLa5 trigonal bipyramids.
La3B(CBr)2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to two equivalent B(1), one C(2), two equivalent C(1), one Br(2), and two equivalent Br(1) atoms. Both La(1)-B(1) bond lengths are 3.08 Å. The La(1)-C(2) bond length is 2.48 Å. Both La(1)-C(1) bond lengths are 2.66 Å. The La(1)-Br(2) bond length is 3.39 Å. Both La(1)-Br(1) bond lengths are 3.12 Å. In the second La site, La(2) is bonded in a 6-coordinate geometry to one C(1), two equivalent C(2), and three equivalent Br(2) atoms. The La(2)-C(1) bond length is 2.50 Å. Both La(2)-C(2) bond lengths are 2.67 Å. There are two shorter (3.19 Å) and one longer (3.43 Å) La(2)-Br(2) bond length. In the third La site, La(3) is bonded in a 10-coordinate geometry to two equivalent B(1), two equivalent C(1), two equivalent C(2), one Br(2), and three equivalent Br(1) atoms. Both La(3)-B(1) bond lengths are 2.69 Å. Both La(3)-C(1) bond lengths are 2.81 Å. Both La(3)-C(2) bond lengths are 2.85 Å. The La(3)-Br(2) bond length is 3.42 Å. There is one shorter (3.22 Å) and two longer (3.26 Å) La(3)-Br(1) bond lengths. B(1) is bonded in a bent 150 degrees geometry to two equivalent La(1), two equivalent La(3), one C(1), and one C(2) atom. The B(1)-C(1) bond length is 1.50 Å. The B(1)-C(2) bond length is 1.49 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(2), two equivalent La(1), two equivalent La(3), and one B(1) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one La(1), two equivalent La(2), two equivalent La(3), and one B(1) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded to two equivalent La(1) and three equivalent La(3) atoms to form a mixture of distorted edge and corner-sharing BrLa5 trigonal bipyramids. In the second Br site, Br(2) is bonded to one La(1), one La(3), and three equivalent La(2) atoms to form a mixture of distorted edge and corner-sharing BrLa5 trigonal bipyramids.