Please use this identifier to cite or link to this item: https://doi.org/10.1002/ejic.200500638
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dc.titleCopper(II) complexes of Schiff-base and reduced Schiff-base ligands: Influence of weakly coordinating sulfonate groups on the structure and oxidation of 3,5-DTBC
dc.contributor.authorSreenivasulu, B.
dc.contributor.authorVetrichelvan, M.
dc.contributor.authorZhao, F.
dc.contributor.authorGao, S.
dc.contributor.authorVittal, J.J.
dc.date.accessioned2014-12-02T06:52:33Z
dc.date.available2014-12-02T06:52:33Z
dc.date.issued2005-11-18
dc.identifier.citationSreenivasulu, B., Vetrichelvan, M., Zhao, F., Gao, S., Vittal, J.J. (2005-11-18). Copper(II) complexes of Schiff-base and reduced Schiff-base ligands: Influence of weakly coordinating sulfonate groups on the structure and oxidation of 3,5-DTBC. European Journal of Inorganic Chemistry (22) : 4635-4645. ScholarBank@NUS Repository. https://doi.org/10.1002/ejic.200500638
dc.identifier.issn14341948
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/114307
dc.description.abstractThe copper(II) complexes of the Schiff-base ligands H2Sams and H2Saes and the reduced Schiff-base ligands H2Sam and H2Sae formed between salicylaldehyde and aminomethanesulfonic acid or 2-aminoethanesulfonic acid (taurine) have been synthesized in moderate yields. The solid-state structures of the five dinuclear complexes, [Cu 2(Sams)2(H2O)2] (1), [Cu 2(Sam)2(H2O)2]·H 2O (2), [Cu2(Saes)2(H2O)2] ·2H2O (3), [Cu2(Sae)2]·2H 2O (4), and [Cu2(Sae)2(DMF)2] ·2DMF (5), have been determined by X-ray crystallography, showing that the CuII centers have distorted square-pyramidal geometry. The Schiff-base copper complexes 1 and 3 have hydrogen-bonded 2D sheet structures while the reduced Schiff-base complexes 4 and 5 display a 2D coordination network and a hydrogen-bonded 2D structure respectively. All these complexes have been investigated for their catecholase activity and activity measurements have been compared with those of dinuclear copper(II) complexes of similar ligands obtained with carboxylate analogues of the corresponding sulfonic acids; these studies show that 4 has significantly higher activity. Further, a strong antiferromagnetic interaction between CuII ions in dimeric complexes 1 [J = -9.04(2) cm-1], 3 [J = -272(4) cm-1), and 4 [J = -237(4) cm-1] has been observed. © Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/ejic.200500638
dc.sourceScopus
dc.subjectBiomimetic studies
dc.subjectCatecholase activity
dc.subjectCopper
dc.subjectMagnetic properties
dc.subjectOrganosulfonate ligands
dc.subjectSchiff-base complexes
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.contributor.departmentSINGAPORE-MIT ALLIANCE
dc.description.doi10.1002/ejic.200500638
dc.description.sourcetitleEuropean Journal of Inorganic Chemistry
dc.description.issue22
dc.description.page4635-4645
dc.description.codenEJICF
dc.identifier.isiut000233523200021
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