Chatterjee, Debabrata and Banerjee, Priyabrata and K, Jagadeesh C. Bose and Mukhopadhyay, Sudit (2012) Peroxydisulfate activation by [RuII(tpy)(pic)(H2O)]+. Kinetic, mechanistic and anti-microbial activity studies. Dalton Transactions, 41. pp. 2694-2698.

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Abstract

The oxidation of [RuII(tpy)(pic)H2O]+ (tpy = 2,2′,6′,2′′-terpyridine; pic− = picolinate) by peroxidisulfate (S2O8 2−) as precursor oxidant has been investigated kinetically by UV-VIS, IR and EPR spectroscopy. The overall oxidation of Ru(II)- to Ru(IV)-species takes place in a consecutive manner involving oxidation of [RuII(tpy)( pic)H2O]+ to [RuIII(tpy)( pic)(OH)]+, and its further oxidation of to the ultimate product [RuIV(tpy)( pic)(O)]+ complex. The time course of the reaction was followed as a function of [S2O8 2−], ionic strength (I) and temperature. Kinetic data and activation parameters are interpreted in terms of an outer-sphere electron transfer mechanism. Anti-microbial activity of RuII(tpy)(pic)H2O]+ complex by inhibiting the growth of Escherichia coli DH5α in presence of peroxydisulfate has been explored, and the results of the biological studies have been discussed in terms of the [RuIV(tpy)( pic)(O)]+ mediated cleavage of chromosomal DNA of the bacteria.

Item Type:	Article
Subjects:	Chemistry
Depositing User:	Dr. Sarita Ghosh
Date Deposited:	12 Apr 2016 10:59
Last Modified:	12 Apr 2016 10:59
URI:	http://cmeri.csircentral.net/id/eprint/124

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