PREPARATION, ELECTROCHEMISTRY AND THERMAL-ANALYSIS OF 2 PALLADIUM(II)COMPLEXES WITH 1-AMINOPYRENE AND DERIVATIVES

Two palladium(II) complexes with aminopyrene and a derivative have bee n synthesized and characterized. In complex 1, Pd(apyr)(2)Cl-2 (apyr = 1-aminopyrene), the pyrenyl-pi-electrons do not conjugate with d-elec trons of the metal, whereas complex 2, Pd(pmpa)Cl-2 (pmpa = N-(2-pyrid ylmethylene)-1-pyrenylamine) is a conjugated, planar molecule. Due to this, the oxidation potential and the electronic spectrum of the pyren yl group of pmpa is significantly influenced by formation of the compl ex. Both iodine doped complexes show semiconductor properties (2.4 x 1 0(-4) S cm(-1) for 1 and 1.0 x 10(-4) S cm(-1) for 2). TG-DTG curves f or 1 shows a single step decomposition. However, curves for complex 2 show a two-step decomposition, corresponding to the organic ligand pmp a. The iodine doped compounds are more stable than the original comple xes. The quantity of doped iodine for 1 and 2 is 23 and 14%, respectiv ely.