1. Department of Chemistry Iowa State University Ames Iowa 50011 USA
2. Ames Laboratory U.S. Department of Energy Ames Iowa 50011 USA
3. Department of Chemistry and Biochemistry Florida State University Tallahassee Florida 32306 USA
4. Department of Physics Center for Molecular Magnetic Quantum Materials and Quantum Theory Project University of Florida Gainesville Florida 32611 USA
5. National High Magnetic Field Laboratory Tallahassee Florida 32310 USA