Infrared Spectroscopy of CO Isolated in Solid Nitrogen Matrix
- Received Date: 2013-05-23
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.
|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|