1. L.V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospekt Nauki 31, 03028 Kyiv-28, Ukraine
2. Department of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, RO-700487 Iasi, Romania
3. Chemistry Department, Warsaw University, ul. Pasteura 1, 02093 Warszawa, Poland
4. Institute of Inorganic Chemistry, University of Vienna, Wahringer Str. 42, 1090 Wien, Austria