Contribution from the Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and Rigaku Corporation, 3-9-12 Matsubaracho, Akishima, Tokyo 196-8666, Japan(2002-09-25時点)
