Oxidation State Assignments in the Organoplatinum One-Electron Redox Series [(N boolean AND N)PtMes(2)](n),n= +,0,,2-

0536324 - ÚFCH JH 2021 RIV DE eng J - Článek v odborném periodiku
Bauer, S. - Záliš, Stanislav - Fiedler, Jan - Ringenberg, M. R. - Kaim, W.
Oxidation State Assignments in the Organoplatinum One-Electron Redox Series [(N boolean AND N)PtMes(2)](n),n= +,0,,2-.
European Journal of Inorganic Chemistry. Roč. 2020, č. 25 (2020), s. 2435-2443. ISSN 1434-1948. E-ISSN 1099-0682
Institucionální podpora: RVO:61388955
Klíčová slova: charge-transfer * coordination chemistry * molecular-structure * crystal-structure * active ligands * excited-states * ground-state * bian ligands * complexes * metal
Obor OECD: Physical chemistry
Impakt faktor: 2.524, rok: 2020
Způsob publikování: Open access

The neutral complexes [((NN)-N-^)PtMes(2)], (NN)-N-^= bis(1-methyl-2-imidazolyl)ketone (bik) or N,N'-disubstituted 1,2-bis-iminoacenaphthenes (R-BIAN), Mes = mesityl, were obtained and characterized as Pt(II)species with planar N(2)PtC(2)configuration and charge transfer transitions in the visible. Reversible one-electron reduction produces radical anion complexes with the spin predominantly localized in the (NN)-N-^ ligand, according to EPR, UV/Vis-IR spectroelectrochemistry, DFT and TD-DFT studies. Reversible one-electron oxidation was also possible, attributed to the steric and electronic influence from the mesityl ligands. The EPR silent cation [(bik)PtMes(2)](+)was characterized by UV/Vis-NIR spectroscopy and TD-DFT calculations as a system with spin density contributions from Pt (31 %) and two mesityl groups (69 %).
Trvalý link: http://hdl.handle.net/11104/0314108