1. Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
2. Key Laboratory
of Organofluorine
Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of
China
3. Emory NMR Research Center, Emory University, 201 Dowman Drive, Atlanta, Georgia, 30322,
United States