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  • 1975-1979  (4)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 267 (1977), S. 856-858 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Subjects were 23 males between 24 and 81 yr old, without significant illnesses and taking no medications. Some were paid volunteers and others were recruited from the longitudinal study of ageing of the National Institute on Ageing and thus were living in a community and fully ambulatory. The study ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 65 (1978), S. 657-658 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Transportation 7 (1978), S. 107-114 
    ISSN: 1572-9435
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The electron impact induced decomposition of 1,6-methano[10]annulene and of its bridge substituted derivatives has been investigated in view of a possible climination of a carbene and formation of ionized naphthalene. While carbene elimination is not observed with the parent hydrocarbon (〈0.5% rel. int.), it is a prominent fragmentation path for its 11-halogen and 11,11-dihalogen derivatives. Elimination of the bridge is observed also with 1,6-methano[10]annulenes carrying C-substituents at C-11. It cannot be determined, however, whether the neutral particle lost is a carbene or a rearranged species. The analogy between thermal and electron impact decomposition is commented upon.
    Notes: Der elektronenstoß-induzierte Zerfall von 1,6-Methano[10]annulen und Derivaten mit Brücken-Substituenten (11-Stellung) wurde im Hinblick auf die Möglichkeit untersucht, daß die Brücke unter gleichzeitiger Bildung von ionisiertem Naphthalin als Carben eliminiert wird. Während die Carbenabspaltung beim 1,6-Methano[10]annulen selbst nicht beobachtet wird (〈0,5% rel. Int.), ist diese bei seinen 11-Halogen- und 11,11-Dihalogen-Derivaten ein wichtiger Fragmentierungsweg. Komplette Eliminierung der Brücke wird auch bei 1,6-Methano[10]annulen mit C-Substituenten in 11-Stellung beobachtet, doch läß sich hier nicht entscheiden, ob die Brücke als Carben order als umgelagerte neutrale Spezies austritt. Auf die Parallelität zwischen thermischem und elektronenstoß-induzierten Verhalten der 1,6-Methano[10]annulene wird hingewiesen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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