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A mononuclear non-heme manganese(IV)-oxo complex binding redox-inactive metal ions

Title
A mononuclear non-heme manganese(IV)-oxo complex binding redox-inactive metal ions
Authors
Chen J.Lee Y.-M.Davis K.M.Wu X.Seo M.S.Cho K.-B.Yoon H.Park Y.J.Fukuzumi S.Pushkar Y.N.Nam W.
Ewha Authors
남원우서미숙이용민박영준
SCOPUS Author ID
남원우scopus; 이용민scopusscopus
Issue Date
2013
Journal Title
Journal of the American Chemical Society
ISSN
0002-7863JCR Link
Citation
vol. 135, no. 17, pp. 6388 - 6391
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Redox-inactive metal ions play pivotal roles in regulating the reactivities of high-valent metal-oxo species in a variety of enzymatic and chemical reactions. A mononuclear non-heme Mn(IV)-oxo complex bearing a pentadentate N5 ligand has been synthesized and used in the synthesis of a Mn(IV)-oxo complex binding scandium ions. The Mn(IV)-oxo complexes were characterized with various spectroscopic methods. The reactivities of the Mn(IV)-oxo complex are markedly influenced by binding of Sc3+ ions in oxidation reactions, such as a ∼2200-fold increase in the rate of oxidation of thioanisole (i.e., oxygen atom transfer) but a ∼180-fold decrease in the rate of C-H bond activation of 1,4-cyclohexadiene (i.e., hydrogen atom transfer). The present results provide the first example of a non-heme Mn(IV)-oxo complex binding redox-inactive metal ions that shows a contrasting effect of the redox-inactive metal ions on the reactivities of metal-oxo species in the oxygen atom transfer and hydrogen atom transfer reactions. © 2013 American Chemical Society.
DOI
10.1021/ja312113p
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자연과학대학 > 화학·나노과학전공 > Journal papers
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