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- W2090957174 abstract "Abstract Reactivity of ruthenium porphyrin π-cation radicals of general formula Ru(CO)(porphyrin)·+Br (porphyrin: tetraphenylporphyrin, octaethylporphyrin) has been investigated. Ru(CO)TTP (tetra- (p,m,o-tolyl)porphyrin) and Ru(CO)OEP were readily oxidized to form respective π-cation radicals, which afforded well resolved, hyperfine shifted NMR spectra. Non-Curie low behaviour for Ru(CO)TTP·+Br was interpreted in terms of thermal equilibrium between 2A2u α 2A1u π-cation radical states. The π-cation radical heated at 100 °C decomposed. The reaction was followed by NMR spectroscopy. The NMR results indicate that the symmetry of the parent complex is retained after oxidation. The formation of Ru(IV)(porphyrin)Br2 accounts for the process observed. The NMR spectrum is strongly paramagnetically shifted. The dominant π-spin transfer is in accord with the dxy2dxz1dyz1 ground state. The new convenient route for generation of monomeric Ru(IV) porphyrins via decarbonylation of π-cation radicals has been established." @default.
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- W2090957174 date "1988-04-01" @default.
- W2090957174 modified "2023-10-18" @default.
- W2090957174 title "Studies of the chemical oxidation of Ru(II) complexes of porphyrins to form the corresponding Ru(IV) complexes" @default.
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- W2090957174 doi "https://doi.org/10.1016/s0020-1693(00)86288-x" @default.
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