1. Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, USA
2. Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw 50-370, Poland
3. Department of Chemistry, University of Science and Technology, Norwida 4/6, Wroclaw 50-373, Poland
4. Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland