Details

Autor(en) / Beteiligte

• Ercolani, Claudio
• Monacelli, Fabrizio

Titel

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

Ist Teil von

• Journal of porphyrins and phthalocyanines, 2001-09, Vol.5 (9), p.668-673

Ort / Verlag

Chichester, UK: John Wiley & Sons, Ltd

Erscheinungsjahr

2001

Beschreibungen/Notizen

• µ‐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 Pc tFeII(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 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 H2[(Pc tFe)2O] which has been assigned to compound 1 by other authors. Copyright © 2001 John Wiley & Sons, Ltd.