Thermal behaviour of complexes of antipyrine derivatives

Parent and mixed ligand complexes of cobalt and copper with antipyrine deri vatives of 1,2-ethanediamine or piperazine and with 2-aminobenzothiazole (T AB) were synthesized and their thermal behaviour was investigated. The comp lexes contain N,N' -bis(4-antipyrylmethyl)piperazine (BAMP) or N,N'-tetra(4 -antipyrylmethyl)-1,2-diaminoethane (TAMEN) or/and TAB as ligand, and Cl-, ClO4- or SCN-. The complexes decompose with the evolution of hear. The deco mposition route depends on the presence of ClO4-. If the ClO4- is not coord inated, it oxidizes the TAB and BAMP or TAMEN and the decomposition is expl osive.