Infrared Stark and Zeeman spectroscopy of OH–CO [electronic resource] : The entrance channel complex along the OH + CO → <i>trans</i>-HOCO reaction pathway
- Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- Article numbers 124,310 : digital, PDF file
- Additional Creators:
- University of Georgia Research Foundation, Inc
United States. Department of Energy. Office of Basic Energy Sciences
United States. Department of Energy. Office of Scientific and Technical Information
- Here, sequential capture of OH and CO by superfluid helium droplets leads exclusively to the formation of the linear, entrance-channel complex, OH-CO. This species is characterized by infrared laser Stark and Zeeman spectroscopy via measurements of the fundamental OH stretching vibration. Experimental dipole moments are in disagreement with <i>ab initio</i> calculations at the equilibrium geometry, indicating large-amplitude motion on the ground state potential energy surface. Vibrational averaging along the hydroxyl bending coordinate recovers 80% of the observed deviation from the equilibrium dipole moment. Inhomogeneous line broadening in the zero-field spectrum is modeled with an effective Hamiltonian approach that aims to account for the anisotropic molecule-helium interaction potential that arises as the OH-CO complex is displaced from the center of the droplet.
- Published through SciTech Connect.
Journal of Chemical Physics 145 12 ISSN 0021-9606 AM
Joseph T. Brice; Tao Liang; Paul L. Raston; Anne B. McCoy; Gary E. Douberly.
- Funding Information:
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