Influence of Methyl Group Position in Bipyridine Ligand on Structure and Luminescence of Related Zinc(Ii) Nitrate Complexes Publisher



Nasser Ostad S¹ ; Abedi A² ; Amani V³ ; Karimi P² ; Heydarnezhad S²
Source: Journal of the Iranian Chemical Society Published:2016

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. © 2016, Iranian Chemical Society.