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Titolo:
Unequivocal evidence about the presence of Fe(III) in mu-oxo-bis(tetrakis(t-butyl)phthalocyaninatoiron)
Autore:
Ercolani, C; Monacelli, F;
Indirizzi:
Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy Univ Roma La Sapienza Rome Italy I-00185 Dept Chem, I-00185 Rome, Italy
Titolo Testata:
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
fascicolo: 9, volume: 5, anno: 2001,
pagine: 668 - 673
SICI:
1088-4246(200109)5:9<668:UEATPO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-OXYGEN; ELECTRONIC-STRUCTURE; PHTHALOCYANINE; COMPLEXES; DIOXYGEN; IRON(II); DIMERS; (MU-OXO)BIS((PHTHALOCYANINATO)IRON(III)); MECHANISM; OXIDATION;
Keywords:
mu-oxo complex; iron(III); oxidation state; tetrakis(t-butyl)phthalocyaninato complex; ascorbic acid;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Monacelli, F Univ Roma La Sapienza, Dept Chem, Ple Aldo Moro 5, I-00185 Rome, Italy Univ Roma La Sapienza Ple Aldo Moro 5 Rome Italy I-00185 aly
Citazione:
C. Ercolani e F. Monacelli, "Unequivocal evidence about the presence of Fe(III) in mu-oxo-bis(tetrakis(t-butyl)phthalocyaninatoiron)", J PORPHYR P, 5(9), 2001, pp. 668-673

Abstract

mu -Oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron] (1) reacts with L-ascorbic acid (LAA) in pyridine containing CH2Cl2 under strictly anaerobic conditions to yield dehydroascorbic acid (DHA) and (PcFeII)-Fe-t(py)(2) (Pc-t = tetrakis(t-butyl)phthalocyaninato dianion). The reaction is quantitative with a 1:1 LAA/1 stoichiometric ratio. This result can be explained only if it is assumed that the mu -oxo complex 1 (reacting as the bispyridine adduct) is an iron(III) complex able to oxidise LAA to DHA quantitatively. Present findings definitively rule out the alternative iron(II) structure H-2[((PcFe)-Fe-t)(2)O] which has been assigned to compound 1 by other authors. Copyright (C) 2001 John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 10:26:13