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  • Homoconjugation  (1)
  • Hydrogen production  (1)
  • Wiley-Blackwell  (2)
  • 1
    ISSN: 0947-3440
    Keywords: Artificial photosynthesis ; Electron transfer ; Sensitizer-relais assemblies ; Photophysical properties ; Hydrogen production ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Modell Systems for an Artificial Photosynthesis - Synthesis and Electron Transfer Studies of Novel Sensitizer-Relais AssembliesSyntheses and determination of electron transfer rates between sensitizers and electron acceptors for a novel class of bis(4,4′-dimethyl-2,2′-bipyridine)[4,4′-bis(alkoxymethyl)-2,2′-bipyridin]ruthenium(II) complexes 6-8 are described. We report on the formation of supramolecular complexes between the dialkoxybenzene-tethered bisheteroleptic Ru(II)-bipyridine complexes 5, 8 and 1,1′-dimethyl-4,4′-bypiridinium (MV2+) and cyclo-[bis(1,1′-p-xylylene-4,4′-bipyridinium)] (BXV4+), respectively. Evidence for the formation of supramolecular sensitizer-relais assemblies is taken from the viologen radical and hydrogen production rates in sacrificial model systems for artificial photosynthesis.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 17 (1978), S. 559-569 
    ISSN: 0570-0833
    Keywords: Spiroconjugation ; Homoconjugation ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Spiro compounds having mutually perpendicular π-electron systems (“spiro-polyenes”) exhibit a new kind of homoconjugation, which is designated as spiroconjugation. Spiro-polyenes are readily accessible, e.g. by cycloaddition, by elimination of dinitrogen from 1,2-diazaspiro-polyenes, and by cyclization of carbenium ions or carbanions. The magnitude of the effect exerted by spiroconjugation is estimated by model calculations. It can be detected, for instance, by comparison of the electronic and photoelectron spectra of spiro-polyenes and analogous compounds which are unable to undergo such interaction.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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