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  • 1
    Electronic Resource
    Electronic Resource
    Ein Weg zu neuartigen funktionalisierten Bis(imino)phosphoranen XP(= NAryl)=NAlkyl (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 2329-2333 
    Details
    ISSN: 0009-2940
    Keywords: 1H-Tetraphospholes, 4,5-dihydro- ; Bis(imino)phosphoranes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Route to Novel Functionalized Bis(imino)phosphoranes XP(=NAryl)=NAlkylChloro(arylimino)phosphane (1) reacts with alkyl azides RN3 (R = tBu, Et3C, 1-Ad) to form 4,5-dihydro-1H-tetrazaphos-pholes 2a-c. The thermal decomposition of these compounds results in the formation of the diazadiphosphetidines 4a-c via the chlorobis(imino)phosphorane intermediates 3a-c, which were detected by NMR spectroscopy. By treating 2a with the lithium salts Li(nBu, C5Me5, NHAryl, OAryl, tBuS) the 4,5-dihydro-1H-tetrazaphosphole intermediates 5a-d are obtained, which by elimination of nitrogen form the bis(imino)phosphoranes 6a-e. The X-ray structure determination of the phosphane derivative tBu2P—P(=NCEt3)= NAryl (7), obtained by the same procedure, is discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901231216
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  • 2
    Electronic Resource
    Electronic Resource
    [n + 2]-Cycloadditionsreaktionen des (Arylimino)phosphenium-Ions, [P≡NAr]+-kationische PN-Heterocyclen mit ungewöhnlicher Struktur und BindungssituationHerrn Professor Eckehard Volker Dehmlow zum 60. Geburtstag gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 1513-1517 
    Details
    ISSN: 0009-2940
    Keywords: [n + 2] Cycloadditions ; Calculations, ab initio ; Phosphenium ions ; 1,3,2,4-Diazadiphosphetidinylium salts ; Tetrazaphospholylium salts ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: [n + 2] Cycloaddition Reactions of the (Arylimino)phosphenium Ion, [P≡NAr]+-Kationic PN Heterocycles with Unusual Structure and Bonding SituationThe iminophosphenium ion [P≡NAr]+ (Ar=2,4,6-tBu3C6H2) (1) reacts with aminoiminophosphanes R2N-P=NtBu (R=iPr, Me3Si) (2) and alkyl azides RN3 (R=tBu, Et3C) (6) to yield the corresponding [n + 2] cycloadducts [R2NP (NAr)P(NtBu)+ (3) and [PN(Ar)NNN(R)]+ (7), respectively. Single-crystal X-ray diffraction studies show that 3a can be considered as an intramolecular donor-acceptor complex while 7 can be regarded as a cyclic diaminophosphenium cation coupled to a diimine fragment, which is in accordance with results of ab initio calculations.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260703
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    Paper (German National Licenses)
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