Aminopolycarboxylates of rare earths. 16. Kinetics of metal ion-exchange reactions between cerium(III) meso- and racemic-2, 3-diaminobutane-N,N,N′,N′-tetraacetate complexes and the cobalt(II), nickel(II), copper(II) and lead(II) ions

G. Laurenczy, E. Brücher, V. Novák

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A spectrophotometric method was used to study the kinetics of the metal ion-exchange reactions between the complexes rac-Cedbta and meso-Cedbta and Pb2+, Cu2+, Co2+ or Ni2+. These exchange reactions proceed predominantly through proton- catalysed dissociation of the complexes. A minor role of the reaction involving direct attack by the ex- changing metal ion is observed only for meso. Cedbta. In the reactions with Co2+ and Ni2+, the proton-catalysed dissociations of rac-Cedbta and meso.Cedbta are to be considered as reversible processes; on the basis of the resulting rate equation, the rate constants may be calcu, lated for the formation reactions of the Co2+ and Ni2+ complexes. The rate constants for the dissociation of the complexes vary in the sequence rac-Cedbta

Original languageEnglish
Pages (from-to)147-155
Number of pages9
JournalInorganica Chimica Acta
Volume133
Issue number1
DOIs
Publication statusPublished - Oct 1 1987

Fingerprint

Cerium
Ion Exchange
Cobalt
Nickel
cerium
Rare earths
Metal ions
Protons
Copper
metal ions
Ion exchange
cobalt
rare earth elements
Lead
Metals
nickel
Ions
copper
Kinetics
Rate constants

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

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title = "Aminopolycarboxylates of rare earths. 16. Kinetics of metal ion-exchange reactions between cerium(III) meso- and racemic-2, 3-diaminobutane-N,N,N′,N′-tetraacetate complexes and the cobalt(II), nickel(II), copper(II) and lead(II) ions",
abstract = "A spectrophotometric method was used to study the kinetics of the metal ion-exchange reactions between the complexes rac-Cedbta and meso-Cedbta and Pb2+, Cu2+, Co2+ or Ni2+. These exchange reactions proceed predominantly through proton- catalysed dissociation of the complexes. A minor role of the reaction involving direct attack by the ex- changing metal ion is observed only for meso. Cedbta. In the reactions with Co2+ and Ni2+, the proton-catalysed dissociations of rac-Cedbta and meso.Cedbta are to be considered as reversible processes; on the basis of the resulting rate equation, the rate constants may be calcu, lated for the formation reactions of the Co2+ and Ni2+ complexes. The rate constants for the dissociation of the complexes vary in the sequence rac-Cedbta",
author = "G. Laurenczy and E. Br{\"u}cher and V. Nov{\'a}k",
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T1 - Aminopolycarboxylates of rare earths. 16. Kinetics of metal ion-exchange reactions between cerium(III) meso- and racemic-2, 3-diaminobutane-N,N,N′,N′-tetraacetate complexes and the cobalt(II), nickel(II), copper(II) and lead(II) ions

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AU - Brücher, E.

AU - Novák, V.

PY - 1987/10/1

Y1 - 1987/10/1

N2 - A spectrophotometric method was used to study the kinetics of the metal ion-exchange reactions between the complexes rac-Cedbta and meso-Cedbta and Pb2+, Cu2+, Co2+ or Ni2+. These exchange reactions proceed predominantly through proton- catalysed dissociation of the complexes. A minor role of the reaction involving direct attack by the ex- changing metal ion is observed only for meso. Cedbta. In the reactions with Co2+ and Ni2+, the proton-catalysed dissociations of rac-Cedbta and meso.Cedbta are to be considered as reversible processes; on the basis of the resulting rate equation, the rate constants may be calcu, lated for the formation reactions of the Co2+ and Ni2+ complexes. The rate constants for the dissociation of the complexes vary in the sequence rac-Cedbta

AB - A spectrophotometric method was used to study the kinetics of the metal ion-exchange reactions between the complexes rac-Cedbta and meso-Cedbta and Pb2+, Cu2+, Co2+ or Ni2+. These exchange reactions proceed predominantly through proton- catalysed dissociation of the complexes. A minor role of the reaction involving direct attack by the ex- changing metal ion is observed only for meso. Cedbta. In the reactions with Co2+ and Ni2+, the proton-catalysed dissociations of rac-Cedbta and meso.Cedbta are to be considered as reversible processes; on the basis of the resulting rate equation, the rate constants may be calcu, lated for the formation reactions of the Co2+ and Ni2+ complexes. The rate constants for the dissociation of the complexes vary in the sequence rac-Cedbta

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