1. Sterling Chemistry Laboratory, Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
2. The University of Utah, 315 S. 1400 E. Rm 2020, Henry Eyring Bldg, Salt Lake City, Utah 84112, United States
3. Institut for Ion Physics and Applied Physics, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
4. Center of Excellence in Mass Spectrometry, Center for Metal Ions in Biological and Chemical Systems, Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
5. Chair of Physical Chemistry II, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
6. Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
7. Department of Chemistry, University of Washington, Seattle, Washington 98195, United States