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1977 (1)
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 Title    Beiträge zur Chemie der Pyrrolpigmente, X V II1  
 Abstract    Struktur-und konformationsanalytische Untersuchungen am chromophoren System der Bilivioline [Biladiene-(a.b)] On the Chemistry of Pyrrole Pigments, X V II Investigations of Structure and Conformation of the Chromophoric System of Biliviolines [Biladienes-(a,b)] H e i n z F a l k , S t e f a n G e r g e l y , K a r l G r u b m a y r u n d O t m a r H o f e r The {Z,Z)-configuration of the bilivioline chromophoric system was established in ­ vestigating an appropriate model compound by means of pK measurement, X H NMR spectroscopy Lanthanide ion induced shift technique, electron absorption spectroscopy and P P P calculations. Moreover a syn-syn conformation which is twisted at the a-methine single bond and planar within the pyrromethene unit (based on the concept of partial structures of bile pigments) of the molecule was deduced. 
  Reference    (Z. Naturforsch. 32b, 299—303 [1977]; eingegangen am 12. November 1976) 
  Published    1977 
  Keywords    !H NMR, Lanthanide Shifts, PP P calculations, UV, Tautomeric Equilibrium 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0299.pdf 
 Identifier    ZNB-1977-32b-0299 
 Volume    32