1. Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
2. Division of Materials
Research, National Science Foundation, Arlington, Virginia 22230, United States
3. Department of Chemistry
and Biochemistry, Eastern Washington University, Cheney, Washington 99004, United States
4. Texas Center for
Superconductivity and Department of Physics, University of Houston, Houston, Texas 77204, United States
5. Geophysical Laboratory, Carnegie Institution of Washington, Washington, D.C. 20015, United States