1. Laboratoire Francis Perrin, CNRS, INP & INC, URA 2453, F-91191 Gif-sur-Yvette, France
2. Laboratoire Francis
Perrin, CEA, IRAMIS, URA 2453, F-91191
Gif-sur-Yvette, France
3. Department
of Biology and Chemistry, Purdue University North Central, Westville, Indiana
46391, United States
4. Department
of Chemistry, University of Vermont, Burlington,
Vermont 05405, United
States