Unusual conformational effect in alpha-aminoorganostannanes.
[formula: see text] Dynamic NMR analysis of conformationally mobile and rigid 2-tributylstannyl-N-methylpiperidines revealed an unexpected conformational effect that is manifested in a small energy difference between conformers in which the tin is equatorial and axial. The major reason appears to be a distortion of the conformer in which the C-2-Sn bond is synclinal to the nitrogen lone pair.
Gawley
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Department of Chemistry, University of Miami, Coral Gables, Florida 33124-0431, USA. rgawley@miami.edu
Low
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Chambournier
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D008094:Lithium / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009947:Organotin Compounds / Q000138:chemical synthesis*; D010880:Piperidines / Q000138:chemical synthesis* / Q000737:chemistry*
D009947:Organotin Compounds; D010880:Piperidines; D008094:Lithium