1. Institute of Chemistry, University of Campinas – UNICAMP, P. O. Box 6154, 13083-970, Campinas, São Paulo, Brazil
2. Department of Chemistry, University of Houston, Houston, TX 77024, USA
3. Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo, SP, Brazil
4. Department of Organic and Macromolecular Chemistry, Ghent University, Ghent 9000, Belgium