Proton magnetic resonance spectra of metal ammine complexes. VII. Amine proton chemical shifts in bis(ethylenediamine)cobalt(III) compounds.
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概要
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Amine proton chemical shifts have been measured for some <I>cis</I>-bis(ethylenediamine)cobalt(III) complexes in trifluoroacetic acid. The shifts can be explained quantitatively by the magnetic anisotropy of the central metal ion and by assuming fast conformational inversion of chelate rings. Discrepancy between the observed and the computed shift values is apparent, however, for the <I>trans</I> hydrogens of the <I>cis</I>-dicyano compound, which may be due to the ground-state <I>trans</I>-effect of the cyanide ion. The chemical shifts of amine protons of <I>cis</I>-tetraammine and <I>cis</I>-bis(trimethylenediamine)compounds have been briefly discussed.
- 公益社団法人 日本化学会の論文
著者
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YONEDA Hayami
Department of Chemistry, Faculty of Science, Hiroshima University
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YAMAZAKI Shigeo
Department of Applied Science, Okayama University of Science
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Sakaguchi Ushio
Department of Chemistry, Faculty of Science, Hiroshima University
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