Cobalt(IV) ammine complexes with 5-nitrosalicylato or similar ligands. IV. Preparation, 1H-NMR, 13C-NMR, and IR spectra.
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概要
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The <SUP>1</SUP>H-NMR spectrum of the 5-nitrosalicylatotetraamminecobalt(IV) complex did not show the signals of phenyl protons of the salicylato ligand, but did show those of ammine protons at 3.7 (s, 6H) and 3.3 ppm (s, 6H). The <SUP>13</SUP>C-NMR peaks could not be observed because of the paramagnetism. The <SUP>1</SUP>H-NMR spectra of the salicylatotetraamminecobalt(III) complexes showed peaks at 3.96 (s, 6H), 3.65 (s, 3H), and 3.38 ppm (s, 3H) for the ammine protons and at 6.7–8.1 ppm (m, 4H) for the phenyl protons of the salicylato ligand. Their <SUP>13</SUP>C-NMR spectra showed seven signals for the salicylato ligand. The IR peaks assignable to the rocking deformation vibration were observed at 830–855 cm<SUP>−1</SUP> for the ammine ligands of 5-nitrosalicylatotetraamminecobalt(IV) complexes and at 820–840 cm<SUP>−1</SUP> for those of salicylatotetraamminecobalt(III) complexes, in conformity with the view that the former complexes are actually cobalt(III) complexes of a free radical nature.
- 公益社団法人 日本化学会の論文
著者
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Yamamoto Yoshihisa
Faculty Of Engineering Kyushu University
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Yamamoto Yoshihisa
Faculty of Pharmaceutical Science, Higashi Nippon Gakuen University
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