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Oxidation of thiosulfate by manganese(III) and nickel(III) complexes: A kinetic and mechanistic investigation

โœ Scribed by Amitava Dutta; Mahammad Ali; Sumana Gangopadhyay; Pradyot Banerjee

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
416 KB
Volume
27
Category
Article
ISSN
0538-8066

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โœฆ Synopsis

The kinetics of the oxidation of thiosulfate ion by [Mn(Y)I ~ (H4Y = trans-cyclohexane-l,2-diamine-N,N,N',N'-tetraacetic acid) and [Ni(L1)I2+ (HL1 = 15-amino-3-methyl-4,7,10,13-tetraazapentadec-3-en-2one oxime) have been investigated at 20.0, 30.0, and 40.0"C in aqueous solution and found to follow the general rate law -d / d t [complex] = K ,,[complex]. The large negative entropy (AS*) of activation for the reactions and the results of Marcus calculation provide support for inner-sphere mechanism to be operative.

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