1. Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 (Singapore), Fax: (+65) 6791‐1961
2. Institute of Chemical Technology, Department of Inorganic Chemistry, Technická 5, 166 28 Prague 6 (Czech Republic)
3. Engineering Fundamentals and Strategic Planning, Tokyo Institute of Technology, 2‐12‐1 I3‐30 Ookayama, Meguro‐ku, 152‐8552 Tokyo (Japan)