Hydrogen Carbonate Inhibited and Induced Substitution Reactions of Labile Square‐Planar Diethylenetriaminepalladium(II) Complexes

作者: Ernst Breet , Rudi van Eldik

DOI: 10.1002/BBPC.199800011

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摘要: The reaction of labile square-planar diethylenetriaminepalladium(II) complexes with hydrogen carbonate ion was studied by stopped flow spectrophotometry as a function [HCO−3] and [Cl−] constant [Pd], ionic strength temperature to investigate the substitution behaviour nucleophile capable affecting solution pH. kinetic results significantly deviate from those for normal behaviour. comprises two consecutive equilibrations, which have complex kinetics compared simple two-term rate law normally encountered, represent inhibited induced reactions, respectively. suggested mechanism data treatment account observed deviating provide alternative ways obtaining formerly determined aquation anation constants comparable accuracy, even too be monitored directly.

参考文章(36)
R.J. Cross, An Appraisal of Square-Planar Substitution Reactions Advances in Inorganic Chemistry. ,vol. 34, pp. 219- 292 ,(1989) , 10.1016/S0898-8838(08)60018-5
François Hutschka, Alain Dedieu, Martin Eichberger, Roland Fornika, Walter Leitner, Mechanistic Aspects of the Rhodium-Catalyzed Hydrogenation of CO2 to Formic AcidA Theoretical and Kinetic Study†,‖ Journal of the American Chemical Society. ,vol. 119, pp. 4432- 4443 ,(1997) , 10.1021/JA961579X
Michael Schmülling, David M. Grove, Gerard van Koten, Rudi van Eldik, Nora Veldman, A. L. Spek, Comparative Rates of Ligand Substitution Reactions of Pt-C-Bonded Complexes in Aqueous Solution and the X-ray Crystal Structure of (Pt{C6H3(CH2NMe2)2-2,6}(OH2))(OSO2CF3) Organometallics. ,vol. 15, pp. 1384- 1391 ,(1996) , 10.1021/OM950474K
Ronald J. Cross, Ligand substitution reactions of square-planar molecules Chemical Society Reviews. ,vol. 14, pp. 197- 223 ,(1985) , 10.1039/CS9851400197
Ernst L. J. Breet, Rudi van Eldik, The mechanism of complex formation reactions of diethylenetriaminepalladium(II) with nucleosides: a case of anation, aquation, and manipulation Journal of The Chemical Society, Chemical Communications. pp. 408- 410 ,(1987) , 10.1039/C39870000408
Andreja Bakac, James H. Espenson, Formation and homolysis of a mononuclear cobalt-oxygen adduct Journal of the American Chemical Society. ,vol. 112, pp. 2273- 2278 ,(1990) , 10.1021/JA00162A030