1. Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China, and State Key Laboratory of Structural Chemistry, Fuzhou, Fujian 350002, P. R. China