1. Arthur Amos Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, Department of Chemistry and Biochemistry, University of CaliforniaSan Diego, 9500 Gilman Drive, La Jolla, California 92093-0314, Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, and Division of Engineering and Applied Science, California Institute of...