Abstract
The electronic structures and the character of the electron density redistribution in the palladium complexes with the redox-active ligands in the oxidized and nonoxidized forms are studied by X-ray photoelectron spectroscopy. According to the photoelectron spectroscopic data, the redox-active ligands exist in different oxidation states due to the redox process proceeding “at ligand.” It is shown that the transition from the neutral to oxidized semiquinone form (from [Pd(LMe)2]·2Cl·H2O to [Pd\(\left( {{\text{L}}_{{{\text{Ph}}}}^{{{\text{ISQ}}}}} \right)\)2]) occurs in the ligand and involves no palladium ions, and the oxidation state of palladium remains unchanged: Pd(II). A significant difference in the photoelectron spectroscopic characteristics obtained for the oxidized trans-complex at 298 and 153 K indicates a specific electronic lability of this complex.
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This work was supported by the Ministry of Science and Higher Education of the Russian Federation as part of the State Assignment of the Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences.
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Translated by E. Yablonskaya
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Ivanova, T.M., Kiskin, M.A., Sidorov, A.A. et al. Electronic Structures of the Palladium(II) Complexes with Redox-Active o-Phenylenediimines. Russ J Coord Chem 47, 702–706 (2021). https://doi.org/10.1134/S1070328421100031
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DOI: https://doi.org/10.1134/S1070328421100031