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Inne
Formation and isolation of an iron-tripyrrole complex from heme degradation.
Autorzy
Rok wydania
2003
Czasopismo
Journal of the American Chemical Society
Numer woluminu
125
Strony
12678-12679
DOI
10.1021/ja036656k
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Addition of dioxygen to a solution of (py)2Fe(OEPO) (1) (where OEPO is the trianion of octaethyloxophlorin) in pyridine-d5 at 23 °C results in a series of oxidative changes that have been followed by 1H NMR spectroscopy. After 4 h, the resonances of 1 have vanished, while several sets of new resonances have developed. The most intense of these are identified as belonging to (py)2FeIII(OEB) (2) by comparison with the previously obtained spectrum of this species, which contains a ring-opened tetrapyrrole. After the sample was left standing for 1 day, further changes occur which produce a sample that is stable, because 1H NMR spectroscopic examination reveals no further changes on continued exposure to dioxygen or air. The product, (py)2FeIII(HETP) (3), where HETP is the dianion of a hexaethyltripyrrole, has been converted into (n-Bu4N)[ClFeIII(HETP)] by treatment with tetra(n-butyl)ammonium chloride. Red (n-Bu4N)[ClFeIII(HETP)] has been isolated and characterized by single-crystal X-ray diffraction.
Słowa kluczowe
Anions, Bioinorganic chemistry, Carbene compounds, Nuclear magnetic resonance spectroscopy, Pyridines
Adres publiczny
https://doi.org/10.1021/ja036656k
Strona internetowa wydawcy
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