1. Organic Chemistry Department Peoples' Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya St. Moscow 117198 Russian Federation.
2. School of Chemistry Cardiff University, Main Building Park Place Cardiff CF10 3AT United Kingdom.
3. Departamento de Química Universidade Federal de Santa Catarina Florianópolis 88040-900 SC Brazil.
4. Department of Chemistry University of Bath BA2 7AY Bath United Kingdom.