DOI: 10.1039/A701832K
(Paper)
Reference Section for: Chem. Commun., 1997, 1287-1288
Stereoselectivity and mechanism of Cu2+ transfer between chiral, multidentate ligands
(Note: The full text of this document is currently only available in the PDF Version )
Klaus Bernauer and Marie-Fabiola Gilet
Abstract
The ligand-exchange kinetics between the enantiomers of [Cu(alamp)] or [Cu(promp)] and (S)-pdta are measured by CD spectroscopy; three different reaction intermediates are proposed, involving the three different states of N-protonation of pdta; at pH < 7 an associative mechanism involving a cage-like, hydrogen-bonded intermediate is suggested for [Cu(alamp)] in which the metal ion is transferred in a single rate limiting step from one ligand to the other.
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