Influence of methyl group position in bipyridine ligand on structure and luminescence of related zinc(II) nitrate complexes |
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| Authors: | S Nasser Ostad Anita Abedi Vahid Amani Parto Karimi Shahrzad Heydarnezhad |
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| Institution: | 1.Department of Toxicology and Pharmacology,University of Tehran Medical Sciences,Tehran,Iran;2.Department of Chemistry, North Tehran Branch,Islamic Azad University,Tehran,Iran;3.Young Researchers and Elite Club, Yadegar-e-Imam Khomeini (RAH) Branch,Islamic Azad University,Tehran,Iran |
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| Abstract: | Three new zinc(II) complexes of Zn(6-mbipy)(η2-NO3)2] (1), Zn(6,6′-dmbipy)(η2-NO3)2] (2) and Zn(5,5′-dmbipy)(η2–NO3)(H2O)2](NO3).H2O (3) were prepared from the reaction of 6-methyl-2,2′-bipyridine (6-mbipy), 6,6′-dimethyl-2,2′-bipyridine (6,6′-dmbipy) and 5,5′-dimethyl-2,2′-bipyridine (5,5′-dmbipy) with Zn(NO3)2·4H2O in methanol, respectively. These three complexes were thoroughly characterized by elemental analysis, thermal gravimetric analysis, differential thermal analysis, infrared, UV–Vis, 1H NMR and 13C{1H} NMR spectroscopy, and their structures have all been determined by the single-crystal X-ray diffraction. The luminescence spectra of the title complexes show that the intensity of their emission bands is stronger than the bands for the free ligands. |
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