Coordination modes of N-(2-hydroxyphenyl)methyl-bis-(2-pyridylmethyl)amine with copper (I) and (II) halides |
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Authors: | Marilyn M. Olmstead Christina Troeltzsch |
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Affiliation: | Department of Chemistry, University of California, Davis One Shields Avenue, Davis, CA, 95616-5295, USA |
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Abstract: | The title ligand, N-(2-hydroxyphenyl)methyl-bis-(2-pyridylmethyl)amine, was prepared via a condensation-reduction synthetic route. The compounds, CuCl(C19H19N3O) and [CuBr(C19H19N3O)]+Br− · 3H2O, were readily synthesized from the reaction of CuCl or CuBr2 and the ligand in acetonitrile. The title copper(I) compound is an O-H ? Cl hydrogen-bonded linear chain of tetrahedrally coordinated copper centers, and the title copper(II) compound exists as two strongly tetragonally distorted dibromide bridged metal cations in a dimer with the phenol hydroxyl groups weakly bound in a trans-fashion to one of the bridging bromides. In the copper(I) complex the phenoxy group acts only as a hydrogen bond donor, whereas in the copper(II) complex it acts both as a ligand and a hydrogen bond donor. |
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Keywords: | Hydrogen bonding Tetragonally distorted octahedral Cu(II) complexes Tetrahedrally coordinated Cu(I) complexes Tridentate and tetradentate ligands |
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