1. Department of Chemistry & Biochemistry The Ohio State University 100 West 18th Avenue Columbus OH 43210 USA
2. Campus Chemical Instrument Center The Ohio State University 100 West 18th Avenue Columbus OH 43210 USA
3. Institute of Structural and Molecular Biology University College London London WC1E 6BT UK
4. Agri Ibrahim Çeçen University Department of Chemistry 04100 Agri Turkey