Thermal decomposition reactions of nickel(II) complexes under quasi-equilibrium conditions

Abstract

The stoichiometry of thermal decomposition and thermal (thermodynamic) stability was studied for the Werner clathrates [Ni(4-Mepy)4(NCS)z].G, where G = benzene(1), toluene(II) and p-xylene(llI). The loss of the volatile components occurs in five steps in compounds I and II and in four steps in the complex III.According to the quasi-equilibrium data the thermodynamic stability of these compounds can be ordered in the following sequence: I<II<III. The increasing host-guest interaction (larger positive band shift in the visible spectra) was accompanied by increasing in the quasi-equilibrium temperature (TD) for the complexes under study.