1. Instituto de Ciencia Molecular; Universidad de Valencia; C/Catedrático J. Beltrán 2 46980 Paterna (Valencia) Spain
2. Nippon Shokubai Co.; Ltd. 5-8 Nishi Otabi-cho Suita 564-8512 Osaka Japan
3. Department of Physical Chemistry and Applied Thermodynamics; University of Cordoba; Campus de Rabanales, Edificio Marie Curie 14014 Córdoba Spain