Abstract

Synthesis, Characterization, Magnetic and Thermal Behavior Studies of Chelate Polymers of Adipyl-bis-phenyl Carbamide with First Transition Series Metal Ions

Yashpal Uttam Rathod1, Yashwant Vithoba Lanje1, Sunil Bapurao Zanje1, Samina Karimkha Tadavi1, Shyam Waman Dafare1 and Shalil Dharamdas Borkar1*

1Department of Chemistry, J. M. Patel Arts, Commerce & Science College, Bhandara-441904 (MS) INDIA.

ABSTRACT

In the present research article, we describe the synthesis of metal chelate polymers compounds also called as metal coordination complexes or polymer complexes by refluxing the metal acetate and bis ligand as 1:1 stoichiometry. Adipylbis-phenyl carbamide (ABPC) which acts as bis ligand for the preparation of chelate polymers of Mn(II), Co(II), Ni(II) and Zn(II). Based on elemental measurements, infrared, magnetic, and reflectance spectra structure of ligand and chelate polymers was affirmed. Thermal decomposition behavior of Mn(II), Co(II), Ni(II), Zn(II), polymers with adipylbis-phenyl carbamide (ABPC) has been investigated by thermogravimetric analysis (TGA) at heating rate 10 °C min-1 under nitrogen atmosphere. Freeman–Carroll, Sharp–Wentworth methods were used to calculate the thermal activation energy (Ea) the order of reaction (n), entropy change (ΔS), free energy change (ΔF), apparent entropy (S*), and frequency factor (Z).

Keywords :Magnetic measurements, bis-ligands, chelate polymers, thermal properties.