Cover Page July-2012, Current Issue-Advanced Materials Letters

Advanced Materials Letters

Volume 3, Issue 3, Pages 213-219, July 2012, Current Issue
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Microwave Induced Synthesis And Characterization Of Semiconducting 2-thiophenecarboxaldehyde Metal Complexes

A. P. Mishra*, A. Tiwari, Rajendra K. Jain

Synthetic Inorganic & Coordination Chemistry Laboratories Department of Chemistry, Dr. H.S. Gour Central University, Sagar (M.P.) 470003, India

Adv. Mater. Lett., 2012, Current Issue, 3 (3), pp 213-219

DOI: 10.5185/amlett.2011.9307

Publication Date (Web): Jun 10, 2012

E-mail: apm19@rediffmail.com and jainrajchem@gmail.com

Abstract

The coordination complexes of Co(II), Ni(II) and Cu(II) derived from 2-thiophenecarboxylidene-3-chloro-4-fluoroaniline (TCC) and 2-thiophenecarboxylidene-4-fluoroaniline (TCF) have been synthesized by conventional as well as microwave methods. These compounds have been characterized by elemental analysis, FT-IR, FAB-mass, molar conductance, electronic spectra, ESR, thermal, magnetic susceptibility, electrical conductivity and XRD analysis. The complexes are coloured and stable in air. Analytical data revealed that all the complexes exhibited 1:2 (metal:ligand) ratio with the coordination 4 or 6. FAB-mass and thermal data show degradation pattern of the complexes. The thermal behavior of metal complexes shows that the hydrated complexes loses water molecules of hydration in the first step; followed by decomposition of ligand molecules in the subsequent steps. The crystal system, lattice parameter, unit cell volume and number of molecules in unit cell in the lattice of complexes have been determined by XRD analysis. XRD patterns indicate crystalline nature for the complexes. The solid state electrical conductivity of the metal complexes has also been measured. Solid state electrical conductivity studies reflect semiconducting nature of the complexes.

Keywords

Microwave synthesis, 2-thiophenecarboxaldehyde,thermal analyses, electrical conductivity, XRD

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