On the mechanism of reduction of maleate by a Co(I) complex with a macrocylic ligand in aqueous solutions

Osnat Schutz, Alexandra Masarwa, Israel Zilbermann, Eric Maimon, Haim Cohen, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Recently, it was shown that a Ni(I) complex with a tetraazamacrocyclic ligand (NiI(1, 4, 8, 11-tetraazacyclotetradecane)+, Ni(I)L+2, cyclam), reduces maleate in aqueous solutions. It was decided to investigate whether this is a general reaction of low valent transition metal complexes. In this study, the reactions of CoIL + (L = 5, 7, 7, 12, 14, 14-hexamethyl-1, 4, 8, 11- tetraazacyclotetradeca-4, 11-diene) with maleate were investigated. The effect of the addition of maleate to aqueous solutions containing this low valent metal complex, prepared via the pulse radiolysis technique, was studied. The d →* complexes formed between the monovalent cobalt complex and maleate were detected and characterized by UV-Vis spectroscopy. The nature of the final products formed was studied and detailed mechanisms of the reduction processes are proposed. The mechanism and kinetics of the reaction of Co(I)L+ with maleate was studied applying pulse-radiolysis and analysis of the final products.

Original languageEnglish
Pages (from-to)2528-2541
Number of pages14
JournalJournal of Coordination Chemistry
Volume63
Issue number14-16
DOIs
StatePublished - 20 Jul 2010

Keywords

  • Cobalt macrocyclic complex
  • Kinetics and mechanism
  • Maleate
  • Reduction

Fingerprint

Dive into the research topics of 'On the mechanism of reduction of maleate by a Co(I) complex with a macrocylic ligand in aqueous solutions'. Together they form a unique fingerprint.

Cite this