Photoinduzierte Valenztautomerie bei Cobaltkomplexen mit Semichinon-Anion-Liganden: Dynamik der High-spin/Low-spin-Komplex-Umwandlung [CoII(3,5-dtbsq)2] → [CoIII(3,5-dtbsq)(3,5-dtbcat)]

Authors

  • David M. Adams,

    1. Department of Chemistry, University of California at San Diego La Jolla, CA 92093-0358 (USA), Telefax: Int. + 619/534-5383
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  • Bulang Li,

    1. Department of Chemistry, University of California at San Diego La Jolla, CA 92093-0358 (USA), Telefax: Int. + 619/534-5383
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  • Prof. John D. Simon,

    Corresponding author
    1. Department of Chemistry, University of California at San Diego La Jolla, CA 92093-0358 (USA), Telefax: Int. + 619/534-5383
    • Department of Chemistry, University of California at San Diego La Jolla, CA 92093-0358 (USA), Telefax: Int. + 619/534-5383
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  • Prof. David N. Hendrickson

    Corresponding author
    1. Department of Chemistry, University of California at San Diego La Jolla, CA 92093-0358 (USA), Telefax: Int. + 619/534-5383
    • Department of Chemistry, University of California at San Diego La Jolla, CA 92093-0358 (USA), Telefax: Int. + 619/534-5383
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  • Diese Arbeit wurde von der National Science Foundation (CHE-9306485, CHE-9115286 und CHE-9420322) gefördert. 3,5-dtbsq = 3,5-Di-tert-butyl-benzosemichinon-Anion; 3,5-dtbcat2− = 3,5-Di-tert-butylcatecholat.

Abstract

Die Pikosekunden-Laserflash-Photolyse ist das Mittel der Wahl zur Untersuchung des intramolekularen Elektronentransfers und der Umwandlung von Spinzuständen in valenztautomeren Cobaltkomplexen. Die CoIII-Form 1 des Komplexes wird optisch in den High-spin-CoII (Semichinon-Anion)2-Zustand angeregt, von wo aus die Relaxation zurück in den Low-spin-CoIII (Semichinon-Anion)(Brenzcatechinat)-Zustand stattfindet.

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