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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 533 (1986), S. 146-152 
    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. 159. On the Reaction of the Diphosphaborirane (t-BuP)2BN(i-Pr)2 with Potassium or Potassium NaphthalenideThe reaction of (t-BuP)2BN(i-Pr)2 with potassium or K-naphthalenide in tetrahydrofuran leads to K(t-Bu)P—;BN(i-Pr)2—P(t-Bu)K (1) via P—;P bond cleavage of the three-membered ring skeleton. Above —78°C 1 changes into the asymmetric compound K(t-Bu)P—;P(t-Bu)—BHN(i-Pr)2 (2). In dimethoxyethane additionally the monometallated diphosphaborirane K(t-Bu)P2BN(i-Pr)2 (3) is formed. 1 and 3, which could be isolated free from other phosphorus containing compounds, as well as the corresponding silylphosphanes Me3Si(t-Bu)P—;BN(i-Pr)2—;P(t-Bu)SiMe 3 (4) and Me3Si(t-Bu)P2BN(i-Pr)2 (5) were characterized by NMR spectroscopy. Protolysis of 3 or 5 leads to a decomposition of the three-membered ring skeleton with formation of H(t-Bu)P—;PH2.
    Notes: Die Reaktion von (t-BuP)2BN(i-Pr)2 mit Kalium oder K-Naphthalid in Tetrahydrofuran verläuft unter Spaltung des Dreiringgerüstes an der P—;P-Bindung. Das dabei gebildete Phosphid K(t-Bu)P—;BN(i-Pr)2—;P(t-Bu)K (1) wandelt sich oberhalb von —78°C in die unsymmetrische Verbindung K(t-Bu)P—;P(t-Bu)—;BHN(i-Pr)2 (2) um. Bei Reaktion in Dimethoxyethan entsteht zusätzlich das monometallierte Diphosphaboriran K(t-Bu)P2BN(i-Pr)2 (3). 1 und 3, die frei von anderen phosphorhaltigen Verbindungen erhältlich sind, wurden — ebenso wie die entsprechenden Silyphosphane (Me3Si)(t-Bu)P—;BN(i-Pr)2—P(t-Bu) (SiMe3) (4) und (Me3Si)(t-Bu)P2BN(i-Pr)2 (5) — kernresonanzspektroskopisch charakterisiert. Die Protolyse von 3 oder 5 führt zur Zersetzung des Dreiringgerüstes unter Bildung von H(t-Bu)P—;PH2.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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