Affiliation: | 1. Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori‐ku, Yokohama, 226‐8503 (Japan), Fax: (+81)?45‐924‐5224;2. Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya‐higashi‐machi, Nara 630‐8506 (Japan) |