1. Max Planck Institute for Chemical Energy Conversion, Stiftstrasse
34-36, D-45470 Mülheim
an der Ruhr, Germany
2. Novosibirsk State University, Pirogova
2, 630090, Novosibirsk, Russia
3. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Akad. Georgi Bontchev Street 11, 1113 Sofia, Bulgaria