Thermal studies of p-toluidino-p-chlorophenylglyoxime and of some corresponding Ni(II), Cu(II) and Co(II) complexes

The thermal behaviour of p-toluidino-p-chlorophenylglyoxime (pTpCPG) and it s Cu(II), NI(TI), and Co(LI) complexes have been studied by DTA and TG. It was found that pyrolytic decomposition undergoes with melting in both Ligan d and its metal complexes and metal oxides remained as end products of the metal complexes. The ligand decomposes in two stages through two different mechanisms and the metal chelates undergo decomposition in three stages. GC -MS combined system was used to identify the products during pyrolytic deco mpositions. The pyrolytic end products were identified by X-ray powder diff raction. (C) 1999 Elsevier Science B.V. All rights reserved.