Ioan Roşca a Department of Inorganic Chemistry , Technical University “Gh. Asachi”, Faculty of Industrial Chemistry , Bd. D. Mangeron 71,6600, Iaşi, Romaniab Department of Inorganic Chemistry , Technical University “Gh. Asachi”, Faculty of Industrial Chemistry , Bd. D. Mangeron 71,6600, Iaşi, Romaniac Department of Inorganic Chemistry , Technical University “Gh. Asachi”, Faculty of Industrial Chemistry , Bd. D. Mangeron 71,6600, Iaşi, Romaniad Department of Inorganic Chemistry , Technical University “Gh. Asachi”, Faculty of Industrial Chemistry , Bd. D. Mangeron 71,6600, Iaşi, Romaniae Department of Inorganic Chemistry , Technical University “Gh. Asachi”, Faculty of Industrial Chemistry , Bd. D. Mangeron 71,6600, Iaşi, Romania