1. Laboratory for Carbene Analogs and Related Intermediates N.D. Zelinsky Institute of Organic Chemistry 119991 Moscow Russia
2. Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069) Université de Toulouse CNRS 31062 Toulouse France
3. Chemistry Department M.V. Lomonosov Moscow State University 119991 Moscow Russia