Synthesis, structure and physicochemical properties of zinc and copper complexes based on sulfonamides containing 8-aminoquinoline ligands

Sulfonamides obtained by reaction of 8-aminoquinoline with 4-nitrobenzenesulfonylchloride and 2,4,6-triisopropylbenzenesulfonyl chloride were used to synthesize coordination compounds with CuII and ZnII with a ML2 composition. Determination of the crystal structures of the resulting zinc and copper...

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Bibliographic Details
Published in:Química Nova 2008, Vol.31 (5), p.1161-1164
Main Authors: Silva, Luiz Everson da, Sousa Jr, Paulo Teixeira de, Joussef, Antonio Carlos, Piovezan, Clóvis, Neves, Ademir
Format: Article
Language:English
Subjects:
CHEMISTRY, MULTIDISCIPLINARY
copper
sulfonamide complexes
zinc
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Summary:Sulfonamides obtained by reaction of 8-aminoquinoline with 4-nitrobenzenesulfonylchloride and 2,4,6-triisopropylbenzenesulfonyl chloride were used to synthesize coordination compounds with CuII and ZnII with a ML2 composition. Determination of the crystal structures of the resulting zinc and copper complexes by X-ray diffraction show a distorted tetrahedral environment for the [Cu(qnbsa)2], [Cu(qibsa)2] and [Zn(qibsa)2] complexes in which the sulfonamide group acts as a bidentate ligand through the nitrogen atoms from the sulfonamidate and quinoline groups. The complex [Zn(qnbsa)2] crystallizes with a water molecule from the solvent and the Zn is five-coordinated and shows a bipyramidal-trigonal geometry. The electrochemical and electronic spectroscopy properties of the copper complexes are also discussed.
ISSN:0100-4042
1678-7064
1678-7064
DOI:10.1590/S0100-40422008000500044