Journal of Solution Chemistry

, Volume 4, Issue 1, pp 45–52 | Cite as

On the reaction of nickel(II) with thiocyanate ion and other unidentate ligands in dimethylsulfoxide as solvent:I d orD mechanism?

  • J. F. Coetzee
  • E. Hsu
Article

Abstract

Rate constants and activation parameters for the formation and the dissociation of the monocomplex of nickel(II) with thiocyanate ion in dimethylsulfoxide have been determined by stopped-flow measurements. The results for thiocyanate ion, and also those for several other unidentate ligands, are consistent with a dissociative interchange mechanism in which solvent exchange constitutes the rate-determining step. On the other hand, previous results have shown that for multidentate ligands the ring-closure step also may be rate limiting.

Key words

Kinetics mechanism dimethylsulfoxide complexation nickel thiocyanate stopped-flow 

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • J. F. Coetzee
    • 1
  • E. Hsu
    • 1
  1. 1.Department of ChemistryUniversity of PittsburghPittsburgh

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