pH Metric and thermal study of the gallacetophenoneoximate complexes of some bivalent metal ions

Abstract

Gallacetophenoneoxime reacts with various metal ions [I] giving either a precipitate or a soluble complex. Dural[2] discussed the thermodynamics of the metal complexes. The relationship be- tween the thermal and the solution stability of the metal com- plexes of a number of oximes was investigated by Liptay et al.[3] and Seshagiri et aL[4]. Liptay et al. (Ioc. cit.) showed that the thermal decomposition of the complex occurs through the scission of a bond other than the metal-ligand bond. In order to arrive at the relationship between solution stability and the thermal stability and the structure of the metal chelate, the authors have studied the oximate complexes of Pd(II), Cu(II), Co(II), Ni(II) and Mn(II).