Abstract
The reactions of the Schiff-base ligands 3-(4-methylimidazol-5-yl)methylenehydrazonobutan-2-one oxime ( LH) and 3-(1-methylimidazol-2-yl)methylenehydrazonobutan-2-one oxime ( L′ H) with copper(II) perchlorate hexahydrate and copper(II) nitrate trihydrate in a 1:1 molar proportion in methanol gave rise to [Cu 2L 2(H 2O) 2](ClO 4) 2 ( 1a), [Cu 2L 2(H 2O) 2](NO 3) 2·1.5H 2O ( 1b), [ Cu 2 L 2 ′ (H 2O) 2](ClO 4) 2 ( 2a) and [ Cu 2 L 2 ′ (NO 3)(H 2O)](NO 3)·0.5H 2O ( 2b) in substantial yields. The complexes have been characterized by C, H, N microanalyses, ESI-MS, FTIR, UV–Vis spectra, conductivity measurements and room temperature magnetic susceptibility and EPR measurements. The X-ray crystal structures of two ( 1a and 2b) of the complexes have been determined. 1a and 2b are oximato bridged Cu(II) dimers. Variable temperature magnetic studies on 1a, 2a and 2b manifest that the Cu(II) centers are antiferromagnetically spin coupled. The electrochemical studies show a Cu(II) to Cu(I) reduction in methanol. The thermal behaviors of 1b and 2b have also been studied.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.