Complexation kinetics of copper(II) and nickel(II) with macrocycles: identification of an outer-sphere chelate effect

Title: Complexation kinetics of copper(II) and nickel(II) with macrocycles: identification of an outer-sphere chelate effect
Creator: McCann, Nichola; Lawrance, Geoffrey A.; Neuhold, Yorck-Michael; Maeder, Marcel
Relation: Inorganic Chemistry Vol. 46, Issue 10, p. 4002-4009
Publisher Link: http://dx.doi.org/10.1021/ic0621143
Publisher: American Chemical Society
Resource Type: journal article
Date: 2007
Description: Ligand-protonation constants and complexation kinetics of differently protonated forms of 10-methyl-1,4,8,12-tetraazacyclopentadecan-10-amine, 1,4,8,12-tetraazacyclopentadecane, and 1,4,8,12-tetraazacyclopentadecan-10-carboxylic acid with Cu(II) and Ni(II) in aqueous solution have been determined. These results are combined with a wide range of published complexation rate constants of partially protonated macrocyclic ligands with the same metal ions. Insight is gained into the electrostatic effects and the outer-sphere interaction of partially protonated ligands with aquated metal ions. An outer-sphere chelate effect has been ascertained.
Subject: complexation kinetics; copper(II); nickel(II); outer-sphere chelate effect
Identifier: http://hdl.handle.net/1959.13/33243
Identifier: uon:3186
Identifier: ISSN:0020-1669
Language: eng
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