Complexation kinetics of copper(II) and nickel(II) with macrocycles: identification of an outer-sphere chelate effect | NOVA. The University of Newcastle's Digital Repository

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/33243

Title: Complexation kinetics of copper(II) and nickel(II) with macrocycles: identification of an outer-sphere chelate effect
Author/Creator: McCann, Nichola; Lawrance, Geoffrey A.; Neuhold, Yorck-Michael; Maeder, Marcel
Institution: The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Science
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.
Relation: Inorganic Chemistry Vol. 46, Issue 10, p. 4002-4009
Publisher Link: http://dx.doi.org/10.1021/ic0621143
Date: 2007
Publisher: American Chemical Society
Keyword(s): complexation kinetics; copper(II); nickel(II); outer-sphere chelate effect
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.13/33243
Identifier: ISSN:0020-1669

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