1. Division of Chemistry & Biological Chemistry
2. School of Physical and Mathematical Sciences
3. Nanyang Technological University
4. Singapore 637371
5. Singapore
6. Department of Inorganic Chemistry
7. University of Chemistry and Technology Prague
8. 166 28 Prague 6
9. Czech Republic
10. Department of Chemical Engineering and Biotechnology
11. University of Cambridge
12. Cambridge CB2 3RA
13. UK