1. Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, UMR CNRS 6521, Université de Bretagne Occidentale, CS 93837, 6 av. Victor Le Gorgeu, 29238 Brest Cedex 3, France, Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, and Bruker AXS Inc., 5465 East Cheryl Parkway, Madison, Wisconsin 53711-5373