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Article – Journal of Advanced Chemical Sciences

Journal of Advanced Chemical Sciences, Volume 2,Issue 2,2016 Pages 276-278

Structural and Electrical Studies of Coordination Compounds of [1-(2, 4-Dihydroxy-Phenyl)-Ethanone-2-(4-Methylphenyl)-2-Phenylethylamine]
Abdul Wajid*, R.B. Mohod

Coordination compounds of transition metals are of particular interest to inorganic chemists because of their structural and chemical properties are often strongly dependent on the nature of the ligand structure. Coordination complexes with substituted ketones have shown diverse structural and properties generating a variety of stereochemistry and a wide range of bonding interactions. Complex formation of many organic compounds plays an important role in the field of conduction. An increase in the conductivity values is observed when metal ions are incorporated into the π electron delocalization of the organic compound. The reduction of conduction is noted if localized bond between metal ions and organic compound is created. In the present study the ligand [1-(2, 4-dihydroxy-phenyl)-ethanone-2-(4-methylphenyl)-2-phenylethylamine] (DHPEMPA) was prepared in ethanolic medium by the reaction of [1-(2,4-Dihydroxy-phenyl)-ethanone] (DHPE) with [2-(4-methylphenyl)-2-phenylethylamine] (MPA) under reflux. The complexes of this ligand have been prepared using metal acetates of Mn(II), Co(II), Ni(II), Cr(III), Cu(II), Zn(II) and Cd(II) under reflux in ethanol/DMF. The products were found to be crystalline solid. The ligand and its complexes have been characterized by FT-IR, 1HNMR, diffused reflectance and elemental analysis. The solid state d.c. electrical conductivity of all the compounds have been measured over 313 – 403 K. It was found that the metal complexes exhibit a conventional semiconducting behavior where conductivity shows increasing tendency by raise of temperature. The lower temperature range is the region of extrinsic semiconductors while the upper temperature range attributed to the intrinsic region where carrier is thermally activated from the valence band to conduction band.

Keywords: Coordination Compounds; DHPEMPA; Diffuse Reflectance; Semiconductors;