a
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, P. R. China
E-mail: xyhuang@fjirsm.ac.cn
;
Fax: (+86) 591-83793727
;
Tel: (+86) 591-83793727
b
Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China