Analytical and TG, DIG and DTA studies of transition metal complexes of salicylic acid

Abstract

Composition r l $ .21$0) and s t r u c t u r e of t h e s e complexes w e r e e s t a b l i s h e d by elementa m a l y s e s and Ill s p e c t r a .The thermal decomposition of t h e s e complexes u s i n g TG, DTG and DTA t o g e t h e r w i t h t h e a n a l y s e s of i n t e r m e d i a t e products gave s u p p o r t i n g evidence f o r t h e a-,signed s t r u c t u r e . Thermal decomposition s t a r t s w i t h dehydration and subsequently t h e anhydrous complex decomposes i n t o corresponding m e t a l o x i d e a s t h e end product.T h e i r dehydration temperature i n c r e a s e s w i t h t h e i n c r e a s e i n t h e c o o r d i n a t e d water frequency. Thermal s t a b i l i t y of t h e metal complexes i n c r e a s e s i n t h e o r d e r Pe7ZnWO.