1. Organic Chemistry Department, University of Salamanca, Plaza de los Caídos 1-5, Salamanca E-37008, Spain
2. Chemical Engineering Department, University of Salamanca, Plaza de los Caídos 1-5, Salamanca E-37008, Spain
3. X-Ray Diffraction Service, University of Salamanca, Plaza de los Caídos 1-5, Salamanca E-37008, Spain