1. Department of Chemistry, University of Saskatchewan, 110 Science Place, Thorvaldson Building (Room 165), Saskatoon, Saskatchewan, S7N 5C9, Canada
2. Universidad Tecnológica de San Luis Potosí, División Industrial, Av. Dr Arturo Nava Jaimes No. 100, Rancho Nuevo, Soledad de Graciano Sánchez, San Luis Potosí, C. P. 78340, Mexico