NMR Relaxation studies in solution of transition metal complexes. 3. Equilibrium dynamics in aqueous solution of copper(II)-bipyridyl-glycine system

F. Debreczeni, I. Nagypál

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The rate constants of the ligand exchange processes and the paramagnetic relaxation involving the mixed ligand copper(II)-bipyridyl-glycine complex have been determined by measuring the T2 relaxation time of the water protons. It was found that the kinetic activity of the CubipyG+ mixed complex against the ligand exchange process is not significantly different from that of the CuG2 parent complex. An extremely high rate constant was found for the {A figure is presented} reaction (k-6 = 7.1 108 M-1 sec-1), i.e. the kinetic background of he stabilization of the mixed complex is the lability of the cis-octahedral Cubipy2+2 complex. The decrease of T2B of the mixed complex compared to that of CuG2 shows, that the stabilization is reflected not only in the CuO bond, but in the CuN bond as well.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalInorganica Chimica Acta
Volume57
Issue numberC
DOIs
Publication statusPublished - 1982

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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