BaLaCl5 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded to one Cl(3), two equivalent Cl(1), and four equivalent Cl(2) atoms to form BaCl7 pentagonal bipyramids that share corners with four equivalent La(1)Cl6 octahedra, edges with two equivalent La(1)Cl6 octahedra, and edges with two equivalent Ba(1)Cl7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 2-39°. La(1) is bonded to two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms to form LaCl6 octahedra that share corners with two equivalent La(1)Cl6 octahedra, corners with four equivalent Ba(1)Cl7 pentagonal bipyramids, and edges with two equivalent Ba(1)Cl7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a linear geometry to one Ba(1) and one La(1) atom. In the second Cl site, Cl(2) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one La(1) atom. In the third Cl site, Cl(3) is bonded in a distorted trigonal planar geometry to one Ba(1) and two equivalent La(1) atoms.
BaLaCl5 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded to one Cl(3), two equivalent Cl(1), and four equivalent Cl(2) atoms to form BaCl7 pentagonal bipyramids that share corners with four equivalent La(1)Cl6 octahedra, edges with two equivalent La(1)Cl6 octahedra, and edges with two equivalent Ba(1)Cl7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 2-39°. The Ba(1)-Cl(3) bond length is 3.26 Å. Both Ba(1)-Cl(1) bond lengths are 3.04 Å. There are two shorter (3.18 Å) and two longer (3.38 Å) Ba(1)-Cl(2) bond lengths. La(1) is bonded to two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms to form LaCl6 octahedra that share corners with two equivalent La(1)Cl6 octahedra, corners with four equivalent Ba(1)Cl7 pentagonal bipyramids, and edges with two equivalent Ba(1)Cl7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. Both La(1)-Cl(1) bond lengths are 2.73 Å. Both La(1)-Cl(2) bond lengths are 2.82 Å. Both La(1)-Cl(3) bond lengths are 2.84 Å. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a linear geometry to one Ba(1) and one La(1) atom. In the second Cl site, Cl(2) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one La(1) atom. In the third Cl site, Cl(3) is bonded in a distorted trigonal planar geometry to one Ba(1) and two equivalent La(1) atoms.