1. Chemistry Department, Federal University of São Carlos, Rod. Washington Luis, Km 235 São Carlos, São Paulo ZIP 13565-905 Brazil
2. Department of Analytical Chemistry Physicochemical and Inorganic Chemistry. UNESP – Univ Estadual Paulista, Institute of Chemistry, Av. Prof. Francisco Degni, 55, Araraquara São Paulo ZIP 14800-900 Brazil
3. Department of Biochemistry and Organic Chemistry. UNESP – Univ Estadual Paulista, Institute of Chemistry Av. Prof. Francisco Degni, 55 Araraquara, São Paulo ZIP 14800-900 Brazil