Abstract

Synthesis and Characterization of Palladium(II) Complexes with 2-(2'-hydroxylphenyl)benzoxazole, 2-(2'-hydroxyl phenyl)benzothiazole or the Mixed Ligands

Subhi A. Al-Jibori*, Ibrahim F. Waheed and Ali T. Al-Samaraie

Abstract:

Na2PdCl4 reacts with 2-(2'-hydroxylphenyl)benzoxazole (Hpbo), 2-(2'-hydroxyl phenyl)benzothiazole (Hpbt) or the mixed ligands (Hpbo) and (Hpbt) in methanol to give trans-[PdCl2(Hpbo)2], trans-[PdCl2(Hpbt)2] or trans-[PdCl2(Hpbo)(Hpbt)], respectively the benzoxazole or benzothiazole ligands behave as monodentate ligands coordinated to palladium through the N-heterocyclic atom. Treatment of the prepared Palladium complexes with triethylamine in methanol gave trans-[Pd(pbo)2], trans-[Pd(pbt)2] or trans-[Pd(pbo)(pbt)] respectively. The deprotonated benzoxazole or benzothiazole ligands coordinated to Palladium as bidentate chelate ligands bonded through the N-heterocyclic atom and the anionic oxygen atom of the hydroxyl group. The prepared complexes were characterized by conductivity measurements, the elemental analysis CHN, infrared and 1H n.m.r. spectra.

Keywords:

Benzoxazole complexes; Benzothiazole complexes; Mixed ligands; Palladium complexes

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