1. Department of Chemistry, Faculty of Education and Welfare Science, Oita University, Dan-noharu, Oita 870-1192, Japan, Department of Chemistry, Fukuoka University of Education, Akama, Munakata, Fukuoka 811-4192, Japan, Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami, Kumamoto 860-8555, Japan, Department of Chemistry, Aichi University of Education, Igaya, Kariya 448-8542, Japan, and Department of Chemistry, Faculty of Science, Okayama University, Tsushima-naka, Okayama 700-8530,...