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'Lanthanoid Shift Measurements' in keywords Facet   Publication Year 1980  [X]
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1Author    Herbert Meier, Hansjörg Gugel, Margret Barth, Udo PlückenRequires cookie*
 Title    Konformationsuntersuchungen an benzokondensierten Achtringen Conformation Analysis of Benzo-Condensed Eight-Membered Rings  
 Abstract    The annellation of 1-4 benzene rings to carbocyclic 8-rings increases stepwise the activation barrier for the ring inversion. A drastic consequence of the steric hindrance in the transition state is the rigidity of 9,10-dihydro-tribenzo[a,c,e]cyclooctenes at room temperature. With the aid of a complete analysis of the iH NMR spectra a decision is possible between fixed C2-conformations (e.g. 8) and Cs-conformations (e.g. 9). 
  Reference    Z. Naturforsch. 35b, 477—481 (1980); eingegangen am 13. Dezember 1979 
  Published    1980 
  Keywords    Ring Inversion, NMR Spectra, Lanthanoid Shift Measurements 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0477.pdf 
 Identifier    ZNB-1980-35b-0477 
 Volume    35