1. Department of Chemistry, Faculty of Science; Niigata University, Nishi-ku; Niigata 950-2181 Japan
2. Department of Chemistry, College of Science; Rikkyo University, Toshima-ku, Tokyo; 171-8501 Japan
3. Department of Fundamental Sciences; Graduate School of Science and Technology; Niigata University, Nishi-ku; Niigata 950-2181 Japan
4. Center for Instrumental Analysis; Institute for Research Promotion; Niigata University, Nishi-ku; Niigata 950-2181 Japan
5. Department of Chemistry and Biochemistry; University of Minnesota Duluth; Duluth Minnesota 55812-2496 USA
6. Department of Chemistry; University of Manitoba; Winnipeg MB R3T 2N2 Canada
7. Department of Chemistry; Graduate School of Science; Kyushu University, Nishi-ku; Fukuoka 819-0395 Japan