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Revisited: The Conception of Lability of Metal Complexes
Author(s) -
van Leeuwen Herman P.
Publication year - 2001
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200106)13:10<826::aid-elan826>3.0.co;2-j
Subject(s) - lability , dissociation (chemistry) , chemistry , metal , limiting , kinetics , thermodynamics , inorganic chemistry , organic chemistry , physics , classical mechanics , mechanical engineering , engineering
Starting from the original reaction layer concept, the voltammetric properties of electroinactive metal complexes are critically reviewed in terms of their finite rates of dissociation into electroactive free metal ions. The limiting conditions for the reaction layer‐based flux expressions are made explicit by comparison with rigorous derivations. The so‐called lability of metal complexes is adequately defined by a set of two basic criteria, one referring to the association/dissociation kinetics of the volume complexation reaction and the other to the interfacial flux of free metal due to dissociation of complex species. The physical significance of the resulting cases is outlined and the lability aspects of a number of new nonequilibrium speciation techniques are briefly discussed.