The Bicyclic Polyselenium Cation Se102+ in the Structure of Se10[Bi4Cl14] - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie Année : 2010

The Bicyclic Polyselenium Cation Se102+ in the Structure of Se10[Bi4Cl14]

Johannes Beck
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Steffen J. Eck
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Résumé

In the ternary system Se / Bi / Cl a new polycation containing phase besides the already known Se4[Bi4Cl14] Se8[Bi4Cl14], and Se10[Bi5Cl17] was discovered. Red, transparent, plate shaped crystals of Se10[Bi4Cl14] were formed by reaction of Se / SeCl4 / BiCl3 in 15 / 1 / 8 molar ratio in evacuated glass ampoules applying a temperature gradient from 90 to 80 °C. The crystal structure consists of bicyclic Se102+ cations and of layered chloridobismutate anions with the cations located between the anionic planes. The atoms of the cation form a six membered ring with a Se4 chain bridging over the 1,4 positions of the Se6 ring. The anions are made up of BiCl7 polyhedra connected via common edges to layers [Bi4Cl142–]. Se4[Bi4Cl14], Se8[Bi4Cl14], Se10[Bi4Cl14], and Te8[Bi4Cl14] all contain an anion of identical formula and two-dimensional connectivity, but these polymeric chloridobismutates are not isostructural. The structural differences are discussed on basis of the different topologies of the nets made up by the Bi atoms.

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Dates et versions

hal-00552477 , version 1 (06-01-2011)

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Johannes Beck, Steffen J. Eck. The Bicyclic Polyselenium Cation Se102+ in the Structure of Se10[Bi4Cl14]. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2010, 636 (11), pp.1910. ⟨10.1002/zaac.201000165⟩. ⟨hal-00552477⟩

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