1. State
Key Laboratory of Applied Organic Chemistry and Key Laboratory of
Nonferrous Metals Chemistry and Resources Utilization of Gansu Province,
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
2. Centro
de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal