1. Contribution from the Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, Department of Chemistry, Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and Department of Applied Physics and Chemistry, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan