1. Department of Inorganic Chemistry,
Institute of Chemistry, Eötvös Loránd University Budapest, H-1117 Budapest, Pázmány
P. sétány 1/A, Hungary
2. Department of Chemistry, St. Francis Xavier University, P.O. Box 5000, Antigonish,
NS, Canada B2G 2W5
3. Guelph-Waterloo Centre for Graduate
Work in Chemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1