Infrared diode laser spectroscopy of O2–N2O van der Waals complex in the ν1 symmetric stretch region of N2O |
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| Institution: | a College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;
b College of Physical Science and Technology, Yangtze University, Jingzhou 434023, China;
c School of Mathematics & Information Science, North China University of Water Resources and Electric Power, Zhengzhou 450011, China |
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| Abstract: | The rovibrational spectrum of O2–N2O van der Waals complex is measured in the v1 symmetric stretch region of N2O monomer using a tunable diode laser spectrometer. The complex is generated by a slit-pulsed supersonic expansion with gas mixtures of O2, N2O, and He. Both a- and b-type transitions are observed. The effective Hamiltonian for an open-shell complex consisting of a diatomic molecule in a 3Σ electronic state and a closed-shell partner is used to analyze the observed spectrum. Molecular constants in the vibrationally excited state are determined accurately. The band-origin of the spectrum is determined to be 1284.7504(25) cm-1, red-shifted from that of the N2O monomer by ～ 0.1529 cm-1. |
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| Keywords: | rovibrational spectrum van der Waals complex intermolecular interactions |
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