1. Laboratory of Applied Quantum Chemistry, Department of Chemistry, POB 135, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Laboratory of Organic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3. Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, MS K1-83, Richland, Washington 99352