View : 17 Download: 0

Reactivity of a cobalt(III)-peroxo complex in oxidative nucleophilic reactions

Title
Reactivity of a cobalt(III)-peroxo complex in oxidative nucleophilic reactions
Authors
Jo Y.Annaraj J.Seo M.S.Lee Y.-M.Kim S.Y.Cho J.Nam W.
Ewha Authors
남원우서미숙조재흥이용민
SCOPUS Author ID
남원우scopus; 이용민scopusscopus
Issue Date
2008
Journal Title
Journal of Inorganic Biochemistry
ISSN
0162-0134JCR Link
Citation
vol. 102, no. 12, pp. 2155 - 2159
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A mononuclear cobalt(III)-peroxo complex bearing a macrocyclic tetradentate N4 ligand, [CoIII(TMC)(O2)]+ (TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), was generated in the reaction of [CoII(TMC)]2+ and H2O2 in the presence of triethylamine in CH3CN. The reactivity of the cobalt(III)-peroxo complex was investigated in aldehyde deformylation with various aldehydes and compared with that of iron(III)- and manganese(III)-peroxo complexes, such as [FeIII(TMC)(O2)]+ and [MnIII(TMC)(O2)]+. In this reactivity comparison, the reactivities of metal-peroxo species were found to be in the order of [MnIII(TMC)(O2)]+ > [CoIII(TMC)(O2)]+ > [FeIII(TMC)(O2)]+. A positive Hammett ρ value of 1.8, obtained in the reactions of [CoIII(TMC)(O2)]+ and para-substituted benzaldehydes, demonstrates that the aldehyde deformylation by the cobalt(III)-peroxo species occurs via a nucleophilic reaction. © 2008 Elsevier Inc. All rights reserved.
DOI
10.1016/j.jinorgbio.2008.08.008
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE