OXOIRON(IV) PORPHYRINS DERIVED FROM CHARGED IRON(III) TETRAARYLPORPHYRINS AND CHEMICAL OXIDANTS IN AQUEOUS AND METHANOLIC SOLUTIONS

Steven Bell, P.R. Cooke, P. Inchley, D.R. Leanord, J.R.L. Smith, A. Robbins

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

The oxidation of six charged iron(III) tetraarylporphyrins with chemical oxidants has been investigated. In aqueous solution each can be converted by tert-butyl hydroperoxide or monopersulphate into its corresponding oxoiron(IV) porphyrin, whereas in methanol only the iron(III) tetra(N-methylpyridyl)porphyrins form detectable ferryl porphyrins at ambient temperatures. On standing, the iron species revert to the parent porphyrin with a small loss due to non-reversible oxidative destruction. That the oxidised porphyrin intermediates are oxoiron(IV) species has been determined using UV-VIS, resonance Raman, H1 NMR and EPR spectroscopy.
Original languageEnglish
Pages (from-to)549-559
Number of pages11
JournalJournal of the Chemical Society- Perkin Transactions 2
Volume1
Publication statusPublished - 1991

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