1. Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980−8578, Japan, Fax: (internat.) +81‐22‐217‐7719
2. Department of Physical Chemistry, Graduate School of Pharmaceutical Science, Chiba University, Inage‐Yayoi, Chiba 263−8522, Japan
3. Ivanovo State Academy for Chemistry and Technology pr. F. Engel’sa 7, 153460, Russia