Paramagnetic cobalt(III) complexes with organic ligands. VI. An X-ray photoelectron spectroscopic study.

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概要

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• Paramagnetic tetraammine-5-nitrosalicylato cobalt complex, paramagnetic μ-hyperoxo-dicobalt complexes and related diamagnetic compounds have been studied by X-ray photoelectron spectroscopy. In all these compounds, the binding energies of Co 2p electrons and their spin-orbit separation were those of usual Co(III) complexes. In the spectrum of paramagnetic tetraammine-5-nitrosalicylatocobalt salt, satellites appeared near the Co 2p peaks showing certain spin density at the cobalt atoms. At the same time, the C ls spectrum showed that considerable portion of carbon atoms has high binding energy suggesting delocalization of electron hole over the organic ligand. The O ls peaks in μ-hyperoxo complexes were <I>ca.</I> 0.6 eV higher than those in μ-peroxo complexes. Deconvolution of the O ls peak in the μ-OOH complex gave OH, =O–, and H<SUB>2</SUB>O peaks at the 1:1:1 ratio, supporting the μ-OOH formulation.

• 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

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