Thermal and other properties of complexes of Mn(II), Co(II) and Ni(II) with 2,2′-bipyridine and trichloroacetates

Complexes of the general formulae Mn(2-bpy)(2)(CCl3COO)(2), Co(2-bpy)(2)(CCl3COO)(2).H2O and Ni(2-bpy)(2)(CCl3COO)(2).2H(2)O (where: 2-bpy=2,2'-bipyridine) have been prepared and characterized by VIS and IR spectroscopy, conductivity and magnetic measurements. The thermal properties of complexes in the solid state were studied under non-isothermal conditions in air atmosphere. During heating the complexes decompose via different intermediate products to the oxides Mn3O4, CoO and NiO. A coupled TG-MS system was used to detection the principal volatile products of thermal decomposition and fragmentation processes of obtained compounds. The principal volatile products of thermal decomposition of complexes are: H2O+, CO2+, Cl-2(+) and other.