Materials Data on La5AsPb3 by Materials Project
La5Pb3As crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded in a 7-coordinate geometry to five equivalent Pb and two equivalent As atoms. There are a spread of La–Pb bond distances ranging from 3.40–4.00 Å. Both La–As bond lengths are 2.98 Å. In the second La site, La is bonded in a 6-coordinate geometry to six equivalent Pb atoms. All La–Pb bond lengths are 3.49 Å. Pb is bonded in a 9-coordinate geometry to nine La atoms. As is bonded to six equivalent La atoms to form face-sharing AsLa6 octahedra.
36 MATERIALS SCIENCE↗