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Tetraphenylphosphonium-hexachloroarsenat, PPh4[AsCl6]; Synthese und Kristallstruktur / Tetraphenylphosphonium Hexachloroarsenate, PPh4[AsCl6]; Synthesis and Crystal Struc...
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Titel: |
Tetraphenylphosphonium-hexachloroarsenat, PPh4[AsCl6]; Synthese und Kristallstruktur / Tetraphenylphosphonium Hexachloroarsenate, PPh4[AsCl6]; Synthesis and Crystal Structure |
In: | Zeitschrift für Naturforschung B, 45, 1990, 7, S. 927-930 |
veröffentlicht: |
Walter de Gruyter GmbH
|
Umfang: | 927-930 |
ISSN: |
1865-7117 0932-0776 |
DOI: | 10.1515/znb-1990-0701 |
Zusammenfassung: | <jats:p>When ozone is passed through a solution of (PPh<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>[As<jats:sub>2</jats:sub>Cl<jats:sub>8</jats:sub>] in dichloromethane at –40 °C, first an instable red compound forms, then intense yellow PPh<jats:sub>4</jats:sub>[AsCl<jats:sub>6</jats:sub>] is obtained. The latter can also be obtained by introducing chlorine instead of ozone. The crystal structure of PPh<jats:sub>4</jats:sub>[AsCl<jats:sub>6</jats:sub>] was determined by X-ray diffraction (844 observed unique reflexions, R = 5,9%). Crystal data: tetragonal, space group P4/n, a = 1305.6(3), c = 752.2(4) pm, Z = 2. The structure is isotypic with that for other PPh<jats:sub>4</jats:sub>[MCl<jats:sub>6</jats:sub>] compounds, the octahedral AsCl<jats:sub>6</jats:sub> <jats:sup>-</jats:sup> ions being situated on fourfold rotation axes and showing a well-known positional disorder in that they are somewhat tilted against the symmetry axes due to packing strain.</jats:p> |
Format: | E-Article |
Quelle: | Walter de Gruyter GmbH (CrossRef) |
Sprache: | Englisch |