The stoichiometry of thermal decomposition was studied for the following compounds: Ni(pyNO)Cl2H2O (I), (pyNO=pyridine N-oxide), Ni(2-MepyNO)Cl2·2H2O (II), Ni(3-MepyNo)Cl2·2H2O (III) and Ni(4-MepyNO)2Cl2·C2H5OH (IV). The heating of the compounds led first to the release of H2O molecules (or C2H5OH molecules), with the formation of Ni(pyNO)Cl2 (V), Ni(2-MepyNO)Cl2(VI), Ni(3-MepyNO)Cl2 (VII) and Ni(4-MepyNO)2Cl2 (VIII). In the next stage, decomposition of the heterocyclic liugands set in. The compositions and spectral and magnetic properties of these complexes indicate their dimeric (II, III, IV, VIII) of polymeric (I, V, VI, VII) structure with coordinated molecules of H2O (or C2H5OH).

Heterogeneous reactions of solid nickel(II) complexes, III

L.B. Rogers

Papers

Effect of metal ion and ligand on thermal stability of metal amine complexes