Crystal structure of pentalanthanum trilead monoiodide, La5Pb3I

Abstract

ILa5Pb3, hexagonal, P63/mcm (no. 193), a = 9.736(1) Å, c = 6.947(1) Å, V = 570.3 Å3, Z = 2, Rgt(F) = 0.029, wRref(F2) = 0.068, T = 293 K.

Cover Picture: Inherently Chiral Molecular Clips: Synthesis, Chiroptical Properties, and Application to Chiral Discrimination (Chem. Eur. J. 9/2007)

“…Most of these types are based on RE metal octahedra or trigonal prisms, which can be discrete or condensed 1–13. These polyhedra can host at their centers a variety of endohedral atoms ranging from hydrogen to lead 1, 14. Among the many types of structures, there is a cubic one of space group I 4 1 32, isostructural to the prototypic Ca 3 I 3 P which is a colorless insulator as expected from the electron partition (Ca 2+ ) 3 (I – ) 3 P 3– 15.…”