1. Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
2. Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, Oklahoma 73096, United States
3. Rigaku Oxford Diffraction, 9009 New Trails Drive The Woodlands, Texas United States
4. Department of Chemistry and Positron Emission Tomography Research Centre, University of Hull, Cottingham Road, Hull HU6 7RX, U.K.