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'Carbonyliron Tin Complexes' in keywords
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1992 (1)
1Author    Bernd Wrackmeyer, Berthold Distler, Max HerberholdRequires cookie*
 Title    U9Sn NM R Spectroscopy of Some Iron-Tin Compounds - First Measurements of One-Bond Coupling Constants V (119Sn57Fe), Geminal Coupling Constants 2/ ( 119 SnFe119Sn) and the Dependence of 119Sn Chemical Shifts on the Nature of the S n -F e Bond  
 Abstract    Carbonyliron tin complexes CpFe(CO)2-S n M e 3 (1), a5-(CO)4Fe(SnM e3)2 (2), cis-(CO)4Fe(SnM e2Cl)2 (3), [R2SnFe(CO)4]2 (4a, R = Me; 4b, R = Bu), {Me2Sn[Fe(CO)4]2}2Sn (5), Me2Sn[Fe(CO)4]2Sn[Fe(CO)4]2 (6) and Sn[Fe(CO)4]4 (7) were studied by ll9Sn N M R . It proved possible for the first time to observe coupling constants './(119Sn57Fe) in the range of 36 to 64 Hz. The large magnitude of geminal coupling constants 12/ (119SnFell9Sn)| (1400 to 1800 Hz) in the cyclic com pounds 4 to 6 indicates the presence of tin-tin interactions as an efficient coupling pathway. Extreme deshielding o f 119Sn nuclei in the complexes 6 (<5u9Sn + 953) and 7 (<5119Sn + 1532) is associated with three-centre FeSnFe bonds in these compounds. 
  Reference    Z. Naturforsch. 47b, 1749—1753 (1992); received July 28 1992 
  Published    1992 
  Keywords    Carbonyliron-Tin Complexes, 119Sn N M R, Coupling Constants 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1749.pdf 
 Identifier    ZNB-1992-47b-1749 
 Volume    47