1. Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan, Department of Chemistry, Graduate School of Science, Osaka University, 1-16, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Central Research Laboratories, Idemitsu Kosan Co., Ltd., 1280 Kami-Izumi, Sodegaura, Chiba 299-293, Japan