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'Multinuclear NMR' in keywords Facet   Publication Year 1987  [X]
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1987[X]
1Author    Roland Köster, Günther Seidel, Susanna Kerschl, Bernd WrackmeyerRequires cookie*
 Title    Atropisomerism in Boron-Nitrogen Heterocycles  
 Abstract    Atropisomerism owing to hindered rotation about the N-aryl bond is observed in 4,5-diethyl-2,2,3-trimethyl-l-(o-trifluormethyl)phenyl-2,5-dihydro-lH-l,2,5-azasila-(2) and -azastanna-boroles (5). The compounds 2 and 5 are characterized by elemental analysis, mass spectra and 'H, "B, 13 C, 29 Si and U9 Sn NMR. The orr/zo-trifluoromethyl group serves as an additional NMR spectroscopic probe because of "through space" W F-'H and 19 F-L, C spin spin coupling. Compound 5 is the first derivative of a 2,5-dihydro-lH-l,2,5-azastannaborol. 
  Reference    Z. Naturforsch. 42b, 191—194 (1987); eingegangen am 23. Oktober 1986 
  Published    1987 
  Keywords    Atropisomerism, Boron-Nitrogen Heterocycles, Multinuclear NMR 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0191.pdf 
 Identifier    ZNB-1987-42b-0191 
 Volume    42