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  • 1975-1979  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 853-861 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photoelectron Spectra and Conformations of Bi- and Tricyclic Hexahydro-1,2,4,5-tetrazinesThe photoelectron spectra of three tricyclic (2-4) and three bicyclic (5-7) hexahydro-1,2,4,5-tetrazines have been interpreted with regard to gas phase conformations. The interactions of the n-orbitals have been studied by MINDO/2 calculations for different conformations of hexahydro-1.2.4,5-tetrazine (1). The observed n-electron ionization potentials permit the identification of tetraequatorial forms of 2-4 and diequatorial-diaxial forms of 5-7 as the dominant conformers. In addition, for 2 and 5 other less stable conformers could be detected.
    Notes: Die Photoelektronenspektren von drei tricyclischen (2-4) und von drei bicyclischen (5-7) Hexahydro-1,2,4,5-tetrazinen wurden hinsichtlich der in der Gasphase vorliegenden Konformeren ausgewertet. Für die infrage kommenden Konformationen wurden zum Studium der Wechselwirkung der n-Orbitale MINDO/2-Rechnungen an der Stammverbindung (1) ausgeführt. Anhand der beobachteten n-Ionisationsbanden lassen sich bei 2-4 tetraäquatoriale und bei 5-7 diäquatorial-diaxiale Formen als stabilste Konformere identifizieren. Bei 2 und 5 wurden daneben weniger stabile Konformere nachgewiesen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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