1. Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Laboratory of Crystallography, Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3. Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 451 10 Ioannina, Greece