Infrared diode laser spectroscopy of O2–N2O van der Waals complex in the ν1 symmetric stretch region of N2O

doi:10.1088/1674-1056/23/12/123301

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.

Keywords: rovibrational spectrum van der Waals complex intermolecular interactions

Received: 16 April 2014
Revised: 15 July 2014
Accepted manuscript online:

PACS:	33.15.Mt	(Rotation, vibration, and vibration-rotation constants)
	33.20.Ea	(Infrared spectra)
	36.40.Mr	(Spectroscopy and geometrical structure of clusters)

Fund:

Project supported by the National Natural Science Foundation of China (Grants Nos. 11174098, 11304023, and 11304095).

Corresponding Authors: Duan Chuan-Xi
E-mail: cxduan@phy.ccnu.edu.cn

Cite this article:

Li Song (李松), Zheng Rui (郑锐), Duan Chuan-Xi (段传喜) Infrared diode laser spectroscopy of O₂–N₂O van der Waals complex in the ν₁ symmetric stretch region of N₂O 2014 Chin. Phys. B 23 123301


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Infrared diode laser spectroscopy of O2–N2O van der Waals complex in the ν1 symmetric stretch region of N2O

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Infrared diode laser spectroscopy of O₂–N₂O van der Waals complex in the ν₁ symmetric stretch region of N₂O