1. Basic Technology Research Laboratory, KDK Corporation, 57 Nishi Aketa-cho, Higasi Kujo, Minami-ku, Kyoto 601, Japan (X.D., Y.Y., H.Y., U.H.); and Department of Chemistry, School of Science, Kwansei Gakuin University, Uegahara, Nishinomiya 662, Japan (Y.O.)