Lei Wu, Ricardo Lambo, Yan Tan, An-wen Liu, Shui-ming Hu. Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix[J]. Chinese Journal of Chemical Physics , 2014, 27(1): 5-8. doi: 10.1063/1674-0068/27/01/5-8
Citation: Lei Wu, Ricardo Lambo, Yan Tan, An-wen Liu, Shui-ming Hu. Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix[J]. Chinese Journal of Chemical Physics , 2014, 27(1): 5-8. doi: 10.1063/1674-0068/27/01/5-8

Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix

doi: 10.1063/1674-0068/27/01/5-8
  • Received Date: 2013-05-23
  • The infrared absorption spectra of the CO monomer isolated in solid N2 have been recorded at various temperatures between 4.5 and 30 K. The absorption features of the fundamen-tal stretching mode show its linewidth and matrix-induced frequency shift to be weakly temperature-dependent. As the temperature of the matrix was raised, an increase in the linewidth together with a redshift in the central frequency was observed. These observa-tions were explained in terms of the quenching of the CO rotational states by the N2 matrix into closely-lying librational states. A quantitative model was then used to calculate the energy difference between these librational states. Results show that they can be thermally populated through the absorption of matrix phonons.
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Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix

doi: 10.1063/1674-0068/27/01/5-8

Abstract: The infrared absorption spectra of the CO monomer isolated in solid N2 have been recorded at various temperatures between 4.5 and 30 K. The absorption features of the fundamen-tal stretching mode show its linewidth and matrix-induced frequency shift to be weakly temperature-dependent. As the temperature of the matrix was raised, an increase in the linewidth together with a redshift in the central frequency was observed. These observa-tions were explained in terms of the quenching of the CO rotational states by the N2 matrix into closely-lying librational states. A quantitative model was then used to calculate the energy difference between these librational states. Results show that they can be thermally populated through the absorption of matrix phonons.

Lei Wu, Ricardo Lambo, Yan Tan, An-wen Liu, Shui-ming Hu. Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix[J]. Chinese Journal of Chemical Physics , 2014, 27(1): 5-8. doi: 10.1063/1674-0068/27/01/5-8
Citation: Lei Wu, Ricardo Lambo, Yan Tan, An-wen Liu, Shui-ming Hu. Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix[J]. Chinese Journal of Chemical Physics , 2014, 27(1): 5-8. doi: 10.1063/1674-0068/27/01/5-8

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