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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 443 (1978), S. 125-134 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vibrational Spectra and Normal-coordinate Analysis of DiphosphanesThe i.r. and Raman spectra of Ph2PPPH2, (C6D5))2PP(C6D5)2, PhBrPPBrPh, PhJPPJPh, and J2PPJ2 were recorded. A normal-coordinate analysis using a three-mass model of the phenyl group was carried out, including the molecules P2F4 [1], P2Cl4 [2], and P2(CH3)4 [3]. Published spectra of these molecules have been used. The influence of the substituents on the PP stretching force constant has been studied. The arrangement of the substituents according to their effect on the PP force constant leads to a series different from that found in the corresponding disilanes [4].
    Notes: Die IR- und Raman-Spektren von Ph2PPPH2, (C6D5)2PP(C6D5)2, PhBrPPBrPh, PhJPPJPh und P2J4 wurden aufgenommen und Normalkoordinatenanalysen mittels eines Dreimassen-Phenylmodells durchgeführt. Mit Hilfe der Literaturspektren wurden Schwingungsberechnungen an P2F4 [1], P2Cl4 [2] und P2(CH34 [3] vorgenommen. Der Einfluß der Substituenten auf die Phosphor-Phosphor-Kraftkonstante konnte so an einer größeren Anzahl von Verbindungen untersucht werden. Die Reihung der Substituenten nach ihrem Einfluß auf die PP-Kraftkonstante unterscheidet sich von jener der Disilane [4].
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
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