Formation and dissociation equilibria of intermediate species in the oxidation of cobalt(II)-dipeptide complexes

Silvia Canepari, Vincenzo Carunchio, Antonella Messina

Research output: Contribution to journalArticle

Abstract

The oxidation of various cobalt(II)-dipeptide complexes in the presence of both molecular oxygen and hydrogen peroxide is examined. The nature of the oxidant exercises a marked influence on the reaction path. The oxo-intermediate species formed apparently possesses different structures, depending on the oxidant. Moreover, when molecular oxygen is employed, the inertness of the resulting cobalt(III)-dipeptide complexes is much higher, suggesting a different degree of protonation. The effect of the ligand structure on the oxidative process is considered; the reaction rate is found to be strongly influenced by the hydrophobicity of the substituent group and by the presence of amidic hydrogen.

Original languageEnglish
Pages (from-to)296-300
Number of pages5
JournalTransition Metal Chemistry
Volume16
Issue number3
DOIs
Publication statusPublished - Jun 1991

ASJC Scopus subject areas

  • Inorganic Chemistry

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