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Paramagnetic Cobalt(III) Complexes with Organic Ligands. VII. The Isolation and Properties of Paramagnetic Tetraammine(5-nitrososalicylato)cobalt(III) Complexes

1982; Oxford University Press; Volume: 55; Issue: 1 Linguagem: Inglês

10.1246/bcsj.55.136

1348-0634

Yoshihisa Yamamoto, Hiroko Kudo, Masayasu Mori, Hidetaka Konno,

Inorganic and Organometallic Chemistry

Abstract The title paramagnetic complexes, [Co(5-NOsal)(NH3)4]X2·nH2O (X2=Cl(NO3), Cl2·HCl, and Cl2), 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 NH3 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 NO2 nitrogen of the green Paramagnetic tetraammine(5-nitrosalicylato)cobalt(III) complexes, [Co(5-NO2sal)(NH3)4]X2, and establishes the difference between these two series of complexes.