1. Department of Inorganic Analytical and Applied Chemistry University of Geneva 30 quai E. Ansermet 1211 Geneva 4 Switzerland
2. Laboratory of Crystallography University of Geneva 24 quai E. Ansermet 1211 Geneva 4 Switzerland
3. Institut Lavoisier de Versailles UMR 8180 University of Versailles Saint-Quentin-en-Yvelines 45 av. des Etats-Unis 78035 Versailles France