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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 472 (1981), S. 38-44 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 99. A Heterocyclophosphane with a P4N Ring Skeleton: Synthesis and Properties of (PC6H5)4N(c-C6H11)The first cycloazaphosphane, (PC6H5)4N(c-C6H11) (1), is obtained by the reaction of N, N-dichlorocyclohexylamine with an excess of dipotassium phenylphosphide K - (PC6H5)n - K (n = 3, 4). Besides, considerable amounts of (PC6H5)5 are formed and occasionally some (PC6H5)4 and (PC6H5)6 can be found. 1 could be purely isolated in 12% yield. The compound is relatively stable against heating but light sensitive. It was characterized by elemental analysis, mass-, NMR, and vibrational spectra. The phenyl substituents at adjacent phosphorus atoms are arranged in trans position.After the reaction of K(R)P - P(R)K with N, N-dihalogenamines no clear indications for the formation of azadiphosphiranes with a P2N three-membered ring skeleton could be found.
    Notes: Das erste bekannte Cycloazaphosphan, (PC6H5)4N(c-C6H11) (1) wird durch Reaktion der Dikaliumphenylphosphide K  -  (PC6H5)n - K (n = 3, 4) mit N, N-Dichlor-cyclohexylamin im Unterschuß erhalten. Daneben entstehen beträchtliche Mengen an (PC6H5)5 sowie gelegentlich etwas (PC6H5)4 und (PC6H5)6. 1 kann als thermisch relativ beständige, aber lichtempfindliche Verbindung in 12% iger Ausbeute rein isoliert werden. Die Charakterisierung erfolgte durch Elementaranalyse, Massenspektrum, Kernresonanz- und Molekülschwingungsspektren. Die Phenylsubstituenten benachbarter Phosphoratome sind trans-ständig zueinander angeordnet.Bei der Reaktion von K(R)P - P(R)K mit N, N-Dihalogenaminen konnten keine eindeutigen Hinweise auf die Bildung von Azadiphosphiranen mit P2N-Dreiringgerüst gefunden werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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