1. Department of Physics and National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611-8440, USA
2. Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310-3706, USA
4. Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, USA