1. Department of Science and High Technology University of Insubria Via Valleggio, 9 22100 Como Italy
2. Consorzio Interuniversitario Reattività Chimica e Catalisi (CIRCC) Bari Italy
3. Department für Chemie Biochemie und Pharmazie Universität Bern Freiestrasse 3 3012 Bern Switzerland
4. Institute of Chemistry Université de Neuchâtel Avenue de Bellevaux 51 2000 Neuchâtel Switzerland