1. Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia
119991
2. A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospect,
Moscow, Russia 119991
3. N.S. Kurnakov Institute of General and Inorganic Chemistry RAS, 31 Leninsky
Prospect, Moscow, Russia 119991
4. Dipartimento di Chimica Strutturale
e Stereochimica Inorganica, Università degli Studi di Milano,
Via Giacomo Venezian 21, I-20133 Milano, Italy