Restricted rotation involving the tetrahedral carbon. XXVI. Certainties and uncertainties involved in the rates of exchange among three sites as obtained by total line shape analyses of 1H NMR spectra: The case of methylene signals.

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概要

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• Benzyl methylene signals, which split into an AB quartet and a singlet and show temperature dependence, are obtained at various temperatures and are simulated with the use of two independent rates of rotation. Certain limitations of accuracy are found in this method. The uncertainty becomes less if additional data are provided from other sources, but never becomes negligible. Contribution of the slower process is found difficult to detect especially when the population involved in the process are the less.

• 公益社団法人 日本化学会の論文

著者

• Kono Motomichi

  Department of Chemistry, Faculty of Science, The University of Tokyo

関連論文

• Restricted rotation involving the tetrahedral carbon. XXV. Barriers to exchange between dl and meso forms of 9-(arylmethyl)triptycenes.
• Restricted rotation involving the tetrahedral carbon. XXVI. Certainties and uncertainties involved in the rates of exchange among three sites as obtained by total line shape analyses of 1H NMR spectra: The case of methylene signals.
• Vibration spectra and rotational isomerism of chain molecules. VI. 2-Chloro-, 2-bromo-, and 2-iodoethyl methyl ethers.

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