1. Vorozhtsov Institute of Organic Chemistry; Russian Academy of Sciences; Ak. Lavrentiev Avenue 9 630090 Novosibirsk Russia
2. International Tomography Center; Russian Academy of Sciences; 3a ul. Institutskaya 630090 Novosibirsk Russia
3. Department of Chemistry, Graduate School of Science; Osaka City University; Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan
4. Max Planck Institute for Polymer Research; Ackermannweg 10 D-55128 Mainz Germany