1. Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece, Laboratory of Applied Quantum Chemistry, School of Chemistry, Aristotle University of Thessaloniki, P.O.B. 135, GR-541 24 Thessaloniki, Greece, Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie street, 50−383 Wroclaw, Poland