1. Department of Chemistry, University of Florida, 32611-7200, Gainsville, FL, USA
2. Department of Chemistry, Swiss Federal Institute of Technology, CH-8092, Zürich, Switzerland
3. Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Tallahassee, Florida, USA
4. Department of Chemistry, Florida State University, 32306-4390, Tallahassee, FL