Thermochimica Acta, 176 (1991) 21-29 zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONM Elsevier Science Publishers B.V., Amsterdam 21 zyxwvutsr SYNTHESIS, THERMAL AND ELECTRICAL STUDIES ON ZIRCONYL COMPLEXES WITH SCHIFF BASES DERIVED FROM 2-HYDROXY-l-NAPHTHALDEHYDE AND SOME AROMATIC DIAMINES M. GABER * and M.M. AYAD Department of Chemistry, Faculty of Science, University of Tanta, Tanta (Egypt) M.I. AYAD ** Department of Chemistry Faculty of Science, University of Menofia, Shebin El-Kom (Egypt) (Received 26 March 1990) ABSTRACT The complexes of zirconyl chloride with some Schiff bases derived from 2-hydroxy-l- naphthaldehyde and various aromatic diamines were prepared and characterized by elemental analysis, electronic absorption spectra and TG and DTA studies. The electrical properties and (I-V) characteristics for the metal complexes were also investigated. INTRODUCTION zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA In recent years considerable attention has been paid to the investigation of oxo-metal complexes because of their interesting coordination chemistry as well as their role in synthetic organic chemistry [l]. Zirconium(W) is of interest since it is used to synthesise novel organic complexes which may be used as agents for oxygen transfer to various substrates [2]. Also, Zr is used to synthesis tractable Schiff base chelate polymers [3]. A series of new zirconium(W) complexes with Schiff bases derived from different salicyl- aldehydes and 2-hydroxy-1-naphthaldehydes with o-aminophenol [4] and also with tetradentate Schiff bases, bis-salicylaldehyde-o-phenylenediimine and bis-salicylaldehyde-p-phenylenediimine in 1 : 1 and 1 : 2 molar ratios [5] have been reported. * Present address: Department of Chemistry, Faculty of Science, Univ. of Sanaa, Yemen Arab Republic. * * To whom all correspondence should be addressed. 0044% 6031/91/$03.50 0 1991 - Elsevier Science Publishers B.V.