1. Instituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Firenze), Italy
2. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS-RAS), Vavilov strasse 28, 119991 Moscow, Russian Federation
3. Departament de Química, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain