1. Chongqing Key Laboratory of Green Synthesis and Applications & College of Chemistry; Chongqing Normal University; Chongqing 401331 China
2. Institute of Theoretical Chemistry; University of Stuttgart; Pfaffenwaldring 55, 70569 Stuttgart Germany
3. Institute of Physical and Theoretical Chemistry, Auf der Morgenstelle 18; University of Tübingen; 72076 Tübingen Germany
4. Universitá di Bologna Dipartimento di Chimica 'G. Ciamician'; Via F. Selmi 2, Bologna 40126 Italy
5. Institute of Physical and Theoretical Chemistry, Emil-Fischer-Str. 42; University of Würzburg; 97074 Würzburg Germany