Unequivocal evidence about the presence of Fe(III) in μ-oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron]-Reference-Cited by-同舟云学术

Unequivocal evidence about the presence of Fe(III) in μ-oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron]

Published:2001-09 Issue:09 Volume:05 Page:668-673
ISSN:1088-4246
Container-title:Journal of Porphyrins and Phthalocyanines
language:en
Short-container-title:J. Porphyrins Phthalocyanines

Author:

ERCOLANI CLAUDIO¹,MONACELLI FABRIZIO¹

Affiliation:

1. Chemistry Department, University of Rome 'La Sapienza', P.le Aldo Moro 5, 00185 Rome, Italy

Abstract

μ-Oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron] (1) reacts with L-ascorbic acid (LAA) in pyridine containing CH 2 Cl 2 under strictly anaerobic conditions to yield dehydroascorbic acid (DHA) and Pc t FeII ( py )2 (Pct = 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 μ-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[( Pc t Fe )2 O ] which has been assigned to compound 1 by other authors.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Chemistry

Link

https://www.worldscientific.com/doi/pdf/10.1002/jpp.376

Reference26 articles.

1. Synthesis and characterization of a μ-oxo dimer formed by the interaction of phthalocyanine iron(II) with dioxygen

2. A solid dioxygen derivative of phthalocyaninatoiron(II)

3. The reaction of the oxygenated derivative of phthalocyaninatoiron(II) with imidazole: Formation of an interesting compound containing imidazole and oxygen

4. Interaction of iron(II) phthalocyanine with molecular oxygen in concentrated sulfuric acid: kinetics and mechanism

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