title: I(8)As(21)Ge(25).
abstract: Single crystals of octaiodine henacosarsenic pentacosagermanium were grown by chemical transport reactions. The structure is isotypic with the analogous clathrates-I. In this structure, the statistically occupied clathrand atoms (As,Ge)(46) form bonds in a distorted tetra-hedral coordination and their arrangement can define two polyhedra of different sizes; one is an (As,Ge)(20) penta-gonal dodeca-hedron, and the other is an (As,Ge)(24) tetra-kaideca-hedron. The guest atom (iodine) resides inside these polyhedra with site symmetry m3 (Wyckoff position 2a) and 2m (Wyckoff position 6d), respectively.
authors.affiliation: Laboratoire Sciences des Matériaux USTHB, Faculté de Chimie, Université Houari-Boumedienne, BP 32 El-Alia, 16111 Bab-Ezzouar, Alger, Algérie.
authors.forename: Katia
authors.initials: K
authors.lastname: Ayouz
authors.forename: Mohammed
authors.initials: M
authors.lastname: Kars
authors.forename: Allaoua
authors.initials: A
authors.lastname: Rebbah
authors.forename: Houria
authors.initials: H
authors.lastname: Rebbah