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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Transannular Interactions Between Acetylenes - Photoelectron Spectroscopic Investigations on 1,8-Diethynylnaphthalene and Cyclic Derivatives of 2,2′-DiethynylbiphenylThe He(I) photoelectron (PE) spectra of 1,8-diethynylnaphthalene (3), 2,2′-diethynylbiphenyl (6) and the cyclic derivatives of 6 (4 and 5) as well as 1-ethynyl-, 2-ethynyl-, 1,5-diethynyl-, 1-vinyl-, and 1,8-divinylnaphthalene have been recorded. The first bands in the PE spectra of these compounds can be assigned using correlation techniques and semiempirical MO calculations. In case of 3 the resonance integral for the transannular interaction has been found to be β = -0.48 eV. For 4 and 5 the evaluation of β was not possible due to the strong interaction between biphenyl and ethynyl units.
    Notes: Die He(I)-Photoelektronen (PE)-Spektren von 1,8-Diethinylnaphthalin (3), 2,2′-Diethinylbiphenyl (6), der cyclischen Derivate von 6 (4 und 5) sowie von 1-Ethinyl-, 2-Ethinyl-, 1,5-Diethinyl-, 1-Vinyl- und 1,8-Divinylnaphthalin wurden durch Korrelation bzw. semiempirische MO-Rechnungen interpretiert. Bei 3 wurde das Resonanzintegral β für die transannulare Wechselwirkung zu -0.48 eV ermittelt, bei 4,5 und 6 ist wegen der starken Wechselwirkung zwischen Biphenylteil und Acetyleneinheiten eine Ermittlung von β nicht möglich.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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