La9B3C6I5 crystallizes in the orthorhombic Pmmn space group. There are five inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent B(2), two equivalent C(1), two equivalent C(2), one I(1), and two equivalent I(2) atoms. In the second La site, La(2) is bonded in a 3-coordinate geometry to three equivalent C(2) and three equivalent I(1) atoms. In the third La site, La(3) is bonded in a 10-coordinate geometry to two equivalent B(1), four equivalent C(3), two equivalent I(2), and two equivalent I(3) atoms. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one C(3), two equivalent C(1), one I(1), and two equivalent I(2) atoms. In the fifth La site, La(5) is bonded in a 3-coordinate geometry to one C(1), two equivalent C(3), one I(2), and two equivalent I(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) and two equivalent C(3) atoms. In the second B site, B(2) is bonded in a bent 150 degrees geometry to two equivalent La(1), one C(1), and one C(2) atom. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(5), two equivalent La(1), two equivalent La(4), and one B(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to two equivalent La(1), three equivalent La(2), and one B(2) atom. In the third C site, C(3) is bonded in a 1-coordinate geometry to one La(4), two equivalent La(3), two equivalent La(5), and one B(1) atom. There are three inequivalent I sites. In the first I site, I(1) is bonded to one La(1), one La(4), and three equivalent La(2) atoms to form a mixture of distorted corner and edge-sharing ILa5 trigonal bipyramids. In the second I site, I(2) is bonded in a 6-coordinate geometry to one La(3), one La(5), two equivalent La(1), and two equivalent La(4) atoms. In the third I site, I(3) is bonded in a 6-coordinate geometry to two equivalent La(3) and four equivalent La(5) atoms.
La9B3C6I5 crystallizes in the orthorhombic Pmmn space group. There are five inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent B(2), two equivalent C(1), two equivalent C(2), one I(1), and two equivalent I(2) atoms. Both La(1)-B(2) bond lengths are 2.68 Å. Both La(1)-C(1) bond lengths are 2.82 Å. Both La(1)-C(2) bond lengths are 2.80 Å. The La(1)-I(1) bond length is 3.33 Å. Both La(1)-I(2) bond lengths are 3.49 Å. In the second La site, La(2) is bonded in a 3-coordinate geometry to three equivalent C(2) and three equivalent I(1) atoms. There is one shorter (2.51 Å) and two longer (2.64 Å) La(2)-C(2) bond lengths. There are two shorter (3.45 Å) and one longer (3.47 Å) La(2)-I(1) bond length. In the third La site, La(3) is bonded in a 10-coordinate geometry to two equivalent B(1), four equivalent C(3), two equivalent I(2), and two equivalent I(3) atoms. Both La(3)-B(1) bond lengths are 2.66 Å. All La(3)-C(3) bond lengths are 2.85 Å. Both La(3)-I(2) bond lengths are 3.82 Å. Both La(3)-I(3) bond lengths are 3.57 Å. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one C(3), two equivalent C(1), one I(1), and two equivalent I(2) atoms. The La(4)-C(3) bond length is 2.54 Å. Both La(4)-C(1) bond lengths are 2.64 Å. The La(4)-I(1) bond length is 3.49 Å. Both La(4)-I(2) bond lengths are 3.47 Å. In the fifth La site, La(5) is bonded in a 3-coordinate geometry to one C(1), two equivalent C(3), one I(2), and two equivalent I(3) atoms. The La(5)-C(1) bond length is 2.46 Å. Both La(5)-C(3) bond lengths are 2.68 Å. The La(5)-I(2) bond length is 3.48 Å. Both La(5)-I(3) bond lengths are 3.51 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) and two equivalent C(3) atoms. Both B(1)-C(3) bond lengths are 1.49 Å. In the second B site, B(2) is bonded in a bent 150 degrees geometry to two equivalent La(1), one C(1), and one C(2) atom. The B(2)-C(1) bond length is 1.49 Å. The B(2)-C(2) bond length is 1.49 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(5), two equivalent La(1), two equivalent La(4), and one B(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to two equivalent La(1), three equivalent La(2), and one B(2) atom. In the third C site, C(3) is bonded in a 1-coordinate geometry to one La(4), two equivalent La(3), two equivalent La(5), and one B(1) atom. There are three inequivalent I sites. In the first I site, I(1) is bonded to one La(1), one La(4), and three equivalent La(2) atoms to form a mixture of distorted corner and edge-sharing ILa5 trigonal bipyramids. In the second I site, I(2) is bonded in a 6-coordinate geometry to one La(3), one La(5), two equivalent La(1), and two equivalent La(4) atoms. In the third I site, I(3) is bonded in a 6-coordinate geometry to two equivalent La(3) and four equivalent La(5) atoms.