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Issue 10, 1980
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Effects of added alkali-metal and alkylammonium bromides on the kinetics of reaction between the [PdCl{Et2N(CH2)2NH(CH2)2NEt2}]+ cation and bromide ion in aqueous solutions

Michael J. Blandamer,  John Burgess,  Philip R. Duce,  Stephen J. Hamshere  and  Jonathan J. Walker 

Abstract

Rate constants are reported for the reaction between bromide ions and the complex ion [PdCl(tedien)]+(tedien =NNN″N″-tetraethyldiethylenetriamine) in aqueous solution containing various concentrations of bromide salts. The first-order rate constant for the unimolecular substitution reaction decreases with increase in salt concentration, the effect being more marked through the series NBun4+ > NPr4+ > NEt4+ > NMe4+ > K+≃ Na+. Comparison of rate data and solubilities of the complex chloride salt in 1.0 mol dm –3 KCl, [NEt4]Cl, and [NBu4]Cl indicates that the dominant salt effect operates on the transition state, where hydration and ion-size effects lead to a marked destabilisation.

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Article type: Paper
DOI: 10.1039/DT9800001809
Citation: J. Chem. Soc., Dalton Trans., 1980,0, 1809-1811
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    Effects of added alkali-metal and alkylammonium bromides on the kinetics of reaction between the [PdCl{Et2N(CH2)2NH(CH2)2NEt2}]+ cation and bromide ion in aqueous solutions

    M. J. Blandamer, J. Burgess, P. R. Duce, S. J. Hamshere and J. J. Walker, J. Chem. Soc., Dalton Trans., 1980, 0, 1809
    DOI: 10.1039/DT9800001809

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