1. Department of Photochemistry, CNRS, University of Haute Alsace, ENSCMu, 3 rue Alfred Werner, 68093 Mulhouse Cedex, France
2. UPMC Univ Paris 06, Institut Parisien de chimie moléculaire (UMR CNRS 7201), C. 229, 4 place Jussieu, 75005 Paris, France
3. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260