K5La2 crystallizes in the monoclinic C2/c space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 12-coordinate geometry to one K(2), two equivalent K(3), three equivalent K(1), and six equivalent La(1) atoms. In the second K site, K(2) is bonded in a 10-coordinate geometry to two equivalent K(1), six equivalent K(3), and two equivalent La(1) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one K(3), two equivalent K(1), three equivalent K(2), and three equivalent La(1) atoms. La(1) is bonded in a 8-coordinate geometry to one K(2), three equivalent K(3), six equivalent K(1), and one La(1) atom.
K5La2 crystallizes in the monoclinic C2/c space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 12-coordinate geometry to one K(2), two equivalent K(3), three equivalent K(1), and six equivalent La(1) atoms. The K(1)-K(2) bond length is 4.28 Å. There is one shorter (4.16 Å) and one longer (4.69 Å) K(1)-K(3) bond length. There are two shorter (4.34 Å) and one longer (4.35 Å) K(1)-K(1) bond length. There are a spread of K(1)-La(1) bond distances ranging from 4.25-4.79 Å. In the second K site, K(2) is bonded in a 10-coordinate geometry to two equivalent K(1), six equivalent K(3), and two equivalent La(1) atoms. There are a spread of K(2)-K(3) bond distances ranging from 4.20-4.58 Å. Both K(2)-La(1) bond lengths are 4.81 Å. In the third K site, K(3) is bonded in a 8-coordinate geometry to one K(3), two equivalent K(1), three equivalent K(2), and three equivalent La(1) atoms. The K(3)-K(3) bond length is 4.21 Å. There are a spread of K(3)-La(1) bond distances ranging from 4.35-4.61 Å. La(1) is bonded in a 8-coordinate geometry to one K(2), three equivalent K(3), six equivalent K(1), and one La(1) atom. The La(1)-La(1) bond length is 2.91 Å.