BaLaI5 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent I(1), two equivalent I(3), and six equivalent I(2) atoms. La(1) is bonded in a 8-coordinate geometry to two equivalent I(2), two equivalent I(3), and four equivalent I(1) atoms. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1) and two equivalent La(1) atoms. In the second I site, I(2) is bonded to three equivalent Ba(1) and one La(1) atom to form a mixture of corner and edge-sharing IBa3La tetrahedra. In the third I site, I(3) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent La(1) atoms.
BaLaI5 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent I(1), two equivalent I(3), and six equivalent I(2) atoms. Both Ba(1)-I(1) bond lengths are 3.69 Å. Both Ba(1)-I(3) bond lengths are 4.13 Å. There are a spread of Ba(1)-I(2) bond distances ranging from 3.66-3.89 Å. La(1) is bonded in a 8-coordinate geometry to two equivalent I(2), two equivalent I(3), and four equivalent I(1) atoms. Both La(1)-I(2) bond lengths are 3.30 Å. Both La(1)-I(3) bond lengths are 3.45 Å. There are two shorter (3.28 Å) and two longer (3.31 Å) La(1)-I(1) bond lengths. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1) and two equivalent La(1) atoms. In the second I site, I(2) is bonded to three equivalent Ba(1) and one La(1) atom to form a mixture of corner and edge-sharing IBa3La tetrahedra. In the third I site, I(3) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent La(1) atoms.