1. Laboratory of Physical Chemistry, Department of Environmental and Natural Resources Management, University of Ioannina, Seferi 2, 30100 Agrinio, Greece, Section de Bioenergetique, DSV, Commisariat al l'Energie Atomique Saclay, 91191 Gif-Sur-Yvette, France, Section of Inorganic Chemistry, Department of Chemistry, University of Ioannina, Panepistimioupolh Ioannina, Greece, and Faculty of Chemistry, Wroclaw University, 14 F. Joliot-Curie Street, 50-383 Wroclaw, Poland