1. Department
of Chemistry, University of California, Berkeley, California 94720, United States
2. CNRS, ICMCB, UPR 9048, Pessac F-33600, France
3. Université
Bordeaux, ICMCB, UPR 9048, Pessac F-33600, France
4. CNRS, CRPP, UPR
8641, Research team for “Molecular Magnetic Materials”, Pessac F-33600, France
5. Université
Bordeaux, CRPP, UPR 8641, Pessac F-33600, France
6. National High Magnetic
Field Laboratory, Tallahassee, Florida 32310, United States
7. Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States