1. Department of Chemistry, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
2. Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
3. Tokyo Chemical Industry Company, Ltd., 4-10-2 Nihonbashi-honcho, Chuo, Tokyo 103-0023, Japan