Electrical Conductivity Studies on Co(II), Cu(II),Ni(II) and Cd(II) Complexes of Azines

M Revanasiddappa,Syed Khasim,C Basavaraja,T Suresh,S C Raghavendra,S D Angadi

doi:10.1155/2008/353518

M Revanasiddappa, Syed Khasim + Show 4 more

Open Access

https://doi.org/10.1155/2008/353518

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Abstract

1-Phenyl-4-(2'-hydroxyphenyl-1-yl)di-imino azine, {1P-4-(2' HPDA)} 1, 4(2'-hydroxyphenyl-1-yl)di-imino azine, {1, 4-(2' HPDA)} are derived from benzophenone hydrozone with different aldehydes in presence of few drops of concentrated hydrochloric acid in alcoholic medium. Metal(II) complexes have been prepared by salts of CoCl2, CuCl2, NiCl2and CdCl2reacting with azine ligands dissolved in alcohol in the molar ratio of (1:2). The prepared complexes were characterized by using various physical methodsviz. elemental, molar conductance, magnetic susceptibility, IR, NMR, XRD and UV-Visible. Conductivity of the powder samples were measured by two probe method. Measured electrical conductivities of Co(II), Cu(II), Ni(II) and Cd(II) complexes of azines are reported in this paper. It is found that at room temperature these complexes show insulator behavior. At higher temperature conductivity increases linearly, showing semi conducting behavior.

Highlights

One of the most interesting areas of research is that of electrically conducting organometallic polymers[1,2]
In view of the above discussion, the present work deals with electrical conductivity studies on Co(II), Cu(II), Ni(II) and Cd(II) complexes of azines derived from benzophenone hydrozone with different aldehydes in presence of few drops of concentrated hydrochloric acid in alcoholic medium
1-Phenyl-4-(2'-hydroxyphenyl-1-yl)di-imino azine, {1P-4-(2'-HPDA)} [Mol Formula C14H12N2O2, Yield=70%, M.P=216oC ], 1,4(2'-hydroxyphenyl-1-yl) di-imino azine,{1, 4-(2' HPDA)} [Moleuclar formula C14H12N2O, yield=75%, m.p=187oC] were derived from benzophenone hydrozone with different aldehydes in presence of few drops of concentrated hydrochloric acid in alcoholic medium has been reported in the literature[8]

Summary

Introduction

One of the most interesting areas of research is that of electrically conducting organometallic polymers[1,2]. The ability to alter the oxidation state of the metal ion, and the charge density along the polymer backbone, provides an alternative route to charge carrier creation as opposed to redox doping. Polyamides and their poly chelates have σ values at 298K of about 10– 6-10-11 ohm-1 cm-1. In view of the above discussion, the present work deals with electrical conductivity studies on Co(II), Cu(II), Ni(II) and Cd(II) complexes of azines derived from benzophenone hydrozone with different aldehydes in presence of few drops of concentrated hydrochloric acid in alcoholic medium. 1-Phenyl-4-(2'-hydroxyphenyl-1-yl)di-imino azine, {1P-4-(2'-HPDA)} [Mol Formula C14H12N2O2, Yield=70%, M.P=216oC ], 1,4(2'-hydroxyphenyl-1-yl) di-imino azine,{1, 4-(2' HPDA)} [Moleuclar formula C14H12N2O, yield=75%, m.p=187oC] were derived from benzophenone hydrozone with different aldehydes in presence of few drops of concentrated hydrochloric acid in alcoholic medium has been reported in the literature[8]

Preparation of complexes

Electrical measurement

Results and Discussion

Conclusion