Synthesis, Physicochemical, Thermal and Fluorescence Studies of Cobalt(II) Complex with Tridentate (ONS) Schiff Base Ligand Derived From 2-Aminophenol and 2-Acetylthiophene

Ayoub, Manara A.; AbdElnasser, Eman H.; Abedel-aziz, M. A.; R., Mariam G.

doi:10.21608/jsrs.2016.18341

Synthesis, Physicochemical, Thermal and Fluorescence Studies of Cobalt(II) Complex with Tridentate (ONS) Schiff Base Ligand Derived From 2-Aminophenol and 2-Acetylthiophene

Document Type : Original Article

Authors

Chemistry Dep., Faculty of Girls for Arts, Science and Education , Ain Shams University, Cairo, Egypt, P.O. BOX 11757, Egypt.

10.21608/jsrs.2016.18341

Abstract

A tridentate Schiff base ligand HL(ATS), N-[2-acetylthiophene]-salicylideneimine was derived from the 1 : 1 condensation of 2-acetyl thiophene and 2-aminophenol was prepared and characterized by elemental analysis, FT-IR, Mass, ¹H-NMR, UV-VIS, thermogravimetric analysis and fluorescence spectra. Cobalt(II) complex was obtained by the reaction of the Schiff base ligand (HL) with cobalt(II) hexahydrate in 1 : 1 molar ratio. The cobalt (II) complex have been characterized by elemental analysis, FT-IR, ¹H-NMR, Ms, UV-VIS, magnetic moment, molar conductance, thermogravimetric analysis (TGA) and fluorescence spectra. Elemental analysis (CHNS) data proved 1 : 1 (M : L) stoichiometry for the reported cobalt (II) complex. IR spectra showed that cobalt (II) complex was coordinated in metal ions via the imine N, O and S atoms. Magnetic and UV-VIS spectra, showed that the geometrical structure of cobalt(II) complex is an octahedral. The molar conductance data revealed that the cobalt(II) complex is non-electrolyte. Thermogravimetric analysis (TGA) revealed the high thermal stabilities.

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