Abstract
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‐statestructures of the five dinuclear complexes, [Cu2(Sams)2(H2O)2](1), [Cu2(Sam)2(H2O)2]·H2O (2), [Cu2(Saes)2(H2O)2]·2H2O (3), [Cu2(Sae)2]·2H2O (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 sulfonicacids; 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, 69451 Weinheim, Germany, 2005)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
