1. São
Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970 São Carlos, São Paulo, Brazil
2. National Laboratory of Synchrotron Light (LNLS), CP 6192, 13083-970 Campinas, São Paulo, Brazil
3. Institute
of Chemistry, State University of Campinas (Unicamp), CP 6154, 13083-970 Campinas, São Paulo, Brazil
4. Department
of Chemistry, Federal University of Paraná, CP 19081, 81531-980 Curitiba, Paraná, Brazil
5. Department
of Chemistry, University of Massachusetts Amherst, 01003 Amherst, Massachusetts, United States