Lanthanide induced shifts of the PMR spectra of polyaza-aromatic compounds.

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概要

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• The LIS's were determined with the equimolar mixtures of two monoaza-aromatic compounds, and the relative coordinating ability of each ligand was estimated from these LIS's. The coordinating ability index is defined as the ratio of the complexed species of the monoaza-aromatics to that of pyridine, and is proved to be transferable to the nitrogen atom of similar steric circumstances. Thus, Eu(fod)<SUB>3</SUB> induced shifts of the protons in several unsymmetrical naphthyridines and related heterocycles were estimated by the sum of the induced shifts of the corresponding monofunctional equivalents weighted by the relative abundances of the complexed species which were obtained from the coordinating ability measurements. The method is applicable to other bifunctional compounds of rigid conformation.

• 公益社団法人 日本化学会の論文

著者

• Takeuchi Isao

  Faculty Of Pharmacy Meijo University

• Ono Makoto

  Department Of Agricultural Chemistry The University Of Tokyo

• HAMADA Yoshiki

  Faculty of Pharmacy, Meijo University

• Nagawa Yoshinobu

  Department of Applied Chemistry, Faculty of Engineering, Yokohama National University

• Hirota Minoru

  Deparment of Synthetic Chemistry, Division of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University

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