1. Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
2. Department of Chemistry and Biochemistry, University of California—Los Angeles, 607 Charles E. Young Drive East, Box 951569, Los Angeles, California 90095-1569, United States
3. Department of Applied Chemistry, University of Tokyo, 7-3-1 Hongo, Bukyo-ku, Tokyo 113-8656, Japan
4. Rigaku Corporation, 3-9-12 Matsubara-cho, Akishima-shi, Tokyo 196-8628, Japan