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Photochemistry of barium(II) and lead(II) 2,4-dinitrostilbene-4'-monoaza-18-crown-6 complexes

URN to cite this document:
urn:nbn:de:bvb:355-epub-135950
DOI to cite this document:
10.5283/epub.13595
Mrozek, H. ; Nikol, H. ; Vogler, Arnd ; Vögtle, F.
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Date of publication of this fulltext: 17 Mar 2010 09:35


Abstract

The chromoionophore trans-2,4-dinitrostilbene-4′-monoaza-18-crown-6 (DMC) in CH3OH is characterized by a long-wavelength absorption (λmax = 476 nm) which is attributed to a charge transfer (CT) transition from the amine function to the nitro substituents. On protonation or complexation with Ba2+ or Pb2+ the amine is blocked and the CT transition is replaced by a ππ* transition of the stilbene ...

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