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Octahedral Cluster Compounds in the Tungsten Bromide Chemistry: MW₆Br₁₄ and ₂W₆Br₁₄. The Crystal Structure of CdW₆Br₁₄

Saadìa Ihmaine ; Laboratoire de Chìmie du Solide et Inorganique Moléculaire, URA CNRS 1495, Université de Rennes I, Avenue du Général Leclerc, 35042 Rennes Cédex, France
Christiane Perrin ; Laboratoire de Chìmie du Solide et Inorganique Moléculaire, URA CNRS 1495, Université de Rennes I, Avenue du Général Leclerc, 35042 Rennes Cédex, France
Marcel Sergent ; Laboratoire de Chìmie du Solide et Inorganique Moléculaire, URA CNRS 1495, Université de Rennes I, Avenue du Général Leclerc, 35042 Rennes Cédex, France

Sažetak

The title compounds synthesized by solid state reaction crystallize in the cubic system (Pn3) and are based on isolated [(WgBrgbBrg3]2- units. For MIIWgBr14 the units are linked together by divalent cations lying at octahedral sites of apical bromines belonging to six adjacent units. In the case of M^WgBr^, the cohesion of the stacking is effected by pairs of monovalent counter cations located at two alternant triangular sites of apical bromines, each of them built of three adjacent units; these two triangular sites correspond to a split octahedral one occupied by the divalent cation in the structure of MIIWgBr14. The structure of CdW6Br14) refined from single crystal X- ray diffraction data, is detailed.

Ključne riječi

Hrčak ID:

136699

URI

https://hrcak.srce.hr/136699

Datum izdavanja:

1.11.1995.

Posjeta: 906 *