Fazlur Rahaman, Priti Gupta, Prabhat Gautam, Subrata Monadal
Department of Chemistry, CMR Institute of Technology, Bengaluru, Karnataka, India – 560 037.
Fazlur Rahaman, Priti Gupta, Prabhat Gautam, Subrata Monadal
VTU-RC affliated to Visweswaraya Technological University, Belgavi, Karnataka, India – 590 018.
Manjunatha M N
VTU-RC affliated to Visweswaraya Technological University, Belgavi, Karnataka, India – 590 018.
Manjunatha M N
Department of Chemistry, Ramaiah Institute of Technology, Bengaluru, Karnataka, India – 560 054
Synthesis, Characterization, Fluorescence and Antimicrobial studies of Cu(II), Co(II), Ni(II), Zn(II) and Cd(II) complexes derived from Schiff’s base (E)-2-(5-chloro-2-hydroxybenzylidene)-N-(4-phenylthiazol-2-yl)hydrazinecarboxamide
Authors
Abstract
A series of Cu(II), Co(II), Ni(II), Zn(II) and Cd(II) complexes of (E)-2-(5-chloro-2-hydroxybenzylidene)-N-(4-phenylthiazol-2-yl)hydrazinecarboxamide (HL) with ONO donor ligand was synthesized. The ligand (HL) was prepared by the condensation of N-(4-phenylthiazol-2-yl)hydrazinecarboxamide with 5-chloro-2-hydroxybenzaldehyde. The HL and its metal complexes have been characterized using elemental analysis and various spectral techniques such as, FTIR, 1H and 13C NMR, Mass, UV–Visible, ESR, thermal analysis (TGA), magnetic moment, conductivity and powder-XRD. The Powder XRD pattern indicates hexagonal or tetragonal system for HL and its metal complexes. The fluorescence studies exhibits strong emission in the range of 400-500 nm for HL. Further in comparison the HL, Zn(II) and Cd(II) complexes showed enhanced emission whereas Cu(II), Co(II) and Ni(II) showed poor emission. The antimicrobial activities of the HL and its metal complexes were studied by minimum inhibitory concentration (MIC) method wherein the metal complexes showed better activity as compare to free ligand.