Paramagnetic cobalt(III) complexes with organic ligands. VII. The isolation and properties of paramagnetic tetraammine-(5-nitrososalicylato)cobalt(III) complexes.

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概要

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• The title paramagnetic complexes, [Co(5-NOsal)(NH<SUB>3</SUB>)<SUB>4</SUB>]X<SUB>2</SUB>·<I>n</I>H<SUB>2</SUB>O (X<SUB>2</SUB>=Cl(NO<SUB>3</SUB>), Cl<SUB>2</SUB>·HCl, and Cl<SUB>2</SUB>), all brown in color, have been isolated and characterized by analytical, spectroscopic, and magnetic methods. The effective magnetic moments of the complexes are 1.6–1.8 BM, and the absorption spectra have two peaks, at 387 and 518 nm. In the XPS of the complex, the cobalt 2p peaks have satellites, and the peak of the nitrogen Is could be deconvoluted to that of NH<SUB>3</SUB> nitrogen at 400.2 eV and to that of NO nitrogen at 402.2 eV. This binding energy of the NO nitrogen of the complex is different from that (405.6 eV) of the NO<SUB>2</SUB> nitrogen of the green Paramagnetic tetraammine(5-nitrosalicylato)cobalt(III) complexes, [Co(5-NO<SUB>2</SUB>sal)(NH<SUB>3</SUB>)<SUB>4</SUB>]X<SUB>2</SUB>, and establishes the difference between these two series of complexes.

• 公益社団法人 日本化学会の論文

著者

• Yamamoto Yoshihisa

  Faculty Of Engineering Kyushu University

• Mori Masayasu

  Faculty of Science Osaka City University

• Konno Hidetaka

  Faculty of Engineering, Hokkaido University

• Kudo Hiroko

  Faculty of Pharmaceutical Sciences, Higashi Nippon Gakuen University

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