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Highly oxidized iron complexes of N-methyltetra-p-tolylporphyrin.
Autorzy
Rok wydania
1992
Czasopismo
Journal of the American Chemical Society
Numer woluminu
114
Strony
2230-2237
DOI
10.1021/ja00032a044
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Two different, highly oxidized iron complexes of TV-methyltetra-p-tolylporphyrin (/V-MeTTPH) have been detected 1H by and 2H NMR spectroscopy after oxidation with m-chloroperoxybenzoic acid. In CH2Cl2/CH3OH (4:1, v/v) in thepresence of sodium methoxide (Ar-MeTTP)FeIICl is converted to (¿V-MeTTP)Fen(OCH3) and then to (CH30)(/V-MeTTP)Ferv=0upon addition of the peroxyacid. The latter is observable over the temperature range -90 to 0 °C, has a magnetic susceptibility
of 2.9 μ (S = 1), and is reduced by phenyldimethylphosphine to (7V-MeTTP)Fen(OCH3). In the absence of sodium methoxide,(Ar-MeTTP)FeIICl is oxidized by the peroxyacid to form a very unstable species observable from -90 to -75 °C whose 1H NMR spectrum shows large hyperfine shifts for the meso aryl substituents that are consistent with the presence of a tr-N-methylporphyrin radical in the product.
Adres publiczny
https://doi.org/10.1021/ja00032a044
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