Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 36, Pages 5622-5631Publisher
WILEY-BLACKWELL
DOI: 10.1002/ejic.200800924
Keywords
Copper; Zinc; Chelates; N ligands
Categories
Funding
- Centre National de la Recherche Scientifique (CNRS)
- Palumed S. A.
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New bis(8-aminoquinoline) ligands linked on the C2 carbon atom of both quinolines have been prepared. When the linker includes a one-atom amino group, the corresponding compound is an excellent chelator of Cu-II ions and forms a mononuclear species with high metal ion selectivity relative to Zn-II chelation. This selectivity for Cu-II ions was not observed for a bis(8-hydroxyquinoline) analogue. The chelating properties of these ligands are compared to those of the bis(8-aminoquinoline) ligands with different linkers between their N8 nitrogen atoms. The N8-linked bis(8-aminoquinoline) ligands have a higher affinity for Cu-II when the linker includes a three-atom unit or when the linker is linked directly through the N8 atom. Other ligands, including that with a dimethylamino linker on C2, are less efficient and seem to chelate Cu-II and Zn-II with an affinity that is similar to that for dipicolylamine. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
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