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  • Inorganic Chemistry  (1)
  • 1970-1974  (1)
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    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 1108-1125 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photoelectron Spectra of Organic Compounds, V. The Interaction between Small Rings and π-SystemsThe analysis of the photoelectron spectra of methylene, cyclopropyl and cyclobutyl substituted vinyl, cyclopentenyl and phenyl compounds showed that within the HMO approximation the conjugative interaction between a Walsh orbital of cyclobutane and a π orbital can be described by a βρσ = -1.25 eV which should be compared with βρσ = -2.15 eV and βρσ = -2.45 eV for the interaction between a cyclopropane Walsh orbital and a π orbital and between two π orbitals. The spectrum of methylenecyclopent-1-ene gives an experimental confirmation of the orbital sequence π, π, σ in s-trans-butadienes.
    Notes: Durch die Analyse der Photoelektronenspektren methylen-, cyclopropyl- und cyclobutyl- substituierter Vinyl-, Cyclopentenyl- und Phenylverbindungen wurde gezeigt, daß die konjugative Wechselwirkung zwischen Orbital und π-Orbital im Rahmen der HMO-Näherung durch ein βρσ = -1.25 eV beschrieben wird, im Vergleich zu βρσ = -2.15 eV und βρσ = -2.45 eV für die Wechselwirkung zwischen π-Orbital und Cyclopropan-Walsh-Orbital bzw. zwischen zwei π-Orbitalen. Das Spektrum von Methylencyclopent-1-en liefert eine experimentelle Bestätigung der Orbitalreihenfolge π, π, σ in s-trans-Butadienen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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