Thermal properties of nickel(II) complexes with pyridine N-Oxide and its methyl derivatives

Abstract

Abstract Thermal properties (the stoichiometry of thermal decomposition and stereochemical changes in thermal decomposition) were studied for the following compounds: A/ Complexes I of the type Ni(NCS)2(q-MepyNO)n. x H2O (C2H5OH) (q = 4,3,2, or without substituent; n = 3 or 2; x = 1 or 0; pyNO = pyridine N-oxide) B/ Complexes II of the type NiCl2(q-MepyNO)n.x H2O (C2H5OH) (q = 4,3,2, or without substituent; n = 2 or 1; x = 1 or 2) It was found, that the heating of the complexes I and II led at first to the release of H2O-molecules (or C2H5OH-molecules, respectively). In the further stage already the decomposition of ligands set in. The stereochemical changesin thermal decomposition of this complexes are discussed.