Author/Authors :
Naser ostad, S. Department of Toxicology and Pharmacology - University of Tehran Medical Sciences - Tehran , Abedi, Anita Department of Toxicology and Pharmacology - University of Tehran Medical Sciences - Tehran , Karimi, Parto Department of Chemistry - North Tehran Branch Islamic Azad University - Tehran , Heydarnezhad, Shahrzad Department of Chemistry - North Tehran Branch Islamic Azad University - Tehran , Amani, Vahid Young Researchers and Elite Club - Yadegar-e-Imam Khomeini (RAH) Branch - Islamic Azad University - Tehran
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.
Keywords :
Crystal structure , Zinc(II) complexes , Thermogravimetric , Bipyridine derivatives , Luminescence spectroscopy
