1. Department of Chemistry; University of Guadalajara; Blvd. Marcelino García Barragán 1421 Guadalajara Jal. C.P. 44430 Mexico
2. Department of Chemistry; Universidad Nacional de Colombia; Av. Cra. 30 45-03 Bogotá Colombia
3. Instituto de Física Fundamental (C.S.I.C.); Serrano 123 E-28006 Madrid Spain