Journal
COORDINATION CHEMISTRY REVIEWS
Volume 226, Issue 1-2, Pages 199-209Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0010-8545(01)00417-9
Keywords
supramolecular chemistry; hydrogen bond; copper(II) complexes
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The copper(II) complexes with multidentate Schiff-base ligands containing imidazole groups have potentially donor and acceptor character in the formation of a coordination bond and a hydrogen bond. They can function as a ligand-complex or as a self-complementary building block for the construction of the assembly structure due to the formation of a coordination bond or a hydrogen bond. In such self-complementary complexes, the monomer is stabilized as a protonated species under acidic conditions, while under appropriate basic conditions the generated imidazolate nitrogen atom coordinates to the Cu(II) ion of the adjacent unit or hydrogen-bonds to the imidazole group of the adjacent unit to give assembly structures in the crystals, depending on the ligand framework and the preferred coordination number of the Cu(II) ion. The interconversion between the monomer and the self-assembled oligomer is reversible by pH adjustment. (C) 2002 Elsevier Science B.V. All rights reserved.
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