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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences


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1865-7117
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Volume 34, Issue 6

Issues

Effect of Solvent, Leaving and Entering Ligand on Substitution Rates of Square Planar Complexes of Palladium(II) with 1 -(2-Hydroxyphenyl) -3,5-diphenylformazan

S. Balt
  • Department of Inorganic Chemistry, Free University, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ J. Meuldijk
  • Department of Inorganic Chemistry, Free University, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znb-1979-0616

Abstract

Nucleophilic Substitution, Palladium(II), Formazan, 1-(2-hydroxyphenyl)-3,5-diphenylformazan, Solvent Effects, Substitution Reactions Nucleophilic substitution in different non-aqueous solvents at square planar complexes of palladium(II) with 1-(2-hydroxyphenyl)-3,5-diphenylformazan (H2Fo) according to FoPdX + Y → FoPdY + X, with X = ammonia and pyridine and Y = triphenylphos-phine, thiourea and the thiocyanate ion, obeys the rate law: rate = k1[FoPdX] + k2[FoPdX][Y]. Values of k1 and k2 were obtained at 25.0 °C. From measured solubilities and literature values of transfer functions the transfer chemical potentials for initial and transition state were calculated. A comparison of these quantities in different solvents leads to the conclusion that non-specific solvation effects are dominant in these compounds. The mutual dependence of the effects of leaving and entering ligands and solvent on the substitution rate indicates a level of synchronicity of bond-breaking and bond-making that is unusually high for palladium(II) complexes.

: Nucleophilic Substitution; Palladium(II); Formazan; 1-(2-hydroxyphenyl)-3,5-diphenylformazan; Solvent Effects; Substitution Reactions

About the article

Received: 1979-02-08

Published Online: 2014-06-02

Published in Print: 1979-06-01


Citation Information: Zeitschrift für Naturforschung B, Volume 34, Issue 6, Pages 843–849, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-1979-0616.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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[2]
Sijbe Balt, Jan Meuldijk, and Arie A. Wismeijer
Transition Metal Chemistry, 1981, Volume 6, Number 5, Page 267
[3]
Sijbe Balt, Martinus W.G. De Bolster, Carolina J. van Garderen, Alexander M. van Herk, Koene R. Lammers, and Elisabeth G. Van Der Velde
Inorganica Chimica Acta, 1985, Volume 106, Number 1, Page 43

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