1. a Department of Chemistry , Punjabi University , Patiala, 147002, India
2. d Department of Chemistry and Biochemistry , University of Windsor , Windsor, N9B3PA, Canada
3. b Instituto de Quimica, Universidade Estadual de Campinas , Campinas, SP, Brazil
4. c Instituto de Quimica, Universidade de São Paulo , C.P. 26077, 05599-970, São Paulo, SP, Brazil