1. Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States
2. Department of Chemical Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
3. Magnetic Resonance Research Center, Arizona State University, Tempe, Arizona 85287, United States
4. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
5. School of Energy Resources, University of Wyoming, Laramie, Wyoming 82071, United States