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Mechanistic Studies on the Oxidation of Ascorbic Acid and Hydroquinone by a {Mn 4 O 6 } 4+ Core in Aqueous Media

✍ Scribed by Chakraborty, Maharudra; Singh, N. Jiten; Mandal, Pulak Chandra; Das, Suranjana; Mukhopadhyay, Subrata

Book ID
120378486
Publisher
American Chemical Society
Year
2011
Tongue
English
Weight
73 KB
Volume
115
Category
Article
ISSN
1089-5639

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## Abstract In aqueous media, the Mn^IV^ trimer [Mn^IV^~3~(μ‐O)~4~(phen)~4~(H~2~O)~2~]^4+^ (1, phen = 1,10‐phenanthroline) equilibrates with its deprotonated from [Mn~3~(μ‐O)~4~(phen)~4~(H~2~O)(OH)]^3+^ (2). Among the several synthetic multinuclear oxo‐ and/or carboxylato‐bridged manganese complexe

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In aqueous media (pH 2.5 -6.0), the Mn IV tetramer [Mn 4 (m-O) 6 A C H T U N G T R E N N U N G (bipy) 6 ] 4+ (1 4+ ; bipy = 2,2'-bipyridine) oxidizes both glyoxylic and pyruvic acid to formic and acetic acid, respectively, under formation of CO 2 . Kinetics studies suggest that the species 1 4+ , it