title: I(8)Sb(10)Ge(36).
abstract: Single crystals of the title compound, octa-iodide deca-anti-monate hexa-tria-conta-germanide, were grown by chemical transport reactions. The structure is isotypic with the analogous clathrates-I. In this structure, the (Ge,Sb)(46) framework consists of statistically occupied Ge and Sb sites that atoms form bonds in a distorted tetra-hedral arrangement. They form polyhedra that are covalently bonded to each other by shared faces. There are two polyhedra of different sizes, viz. a (Ge,Sb)(20) dodeca-hedron and a (Ge,Sb)(24) tetra-cosa-hedron in a 1:3 ratio. The guest atom (iodine) resides inside these polyhedra with symmetry m3 (Wyckoff position 2a) and 2m (Wyckoff position 2d), respectively.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Kars
authors.forename: Thierry
authors.initials: T
authors.lastname: Roisnel
authors.forename: Vincent
authors.initials: V
authors.lastname: Dorcet
authors.forename: Allaoua
authors.initials: A
authors.lastname: Rebbah
authors.forename: L Carlos
authors.initials: LC
authors.lastname: Otero-Diáz