Clathrate and inclusion compounds. Part VI. A study of the temperature dependence of the contours of the vibrational bands of guest molecules in the β-quinol host lattice
1979; Pergamon Press; Volume: 35; Issue: 1 Linguagem: Inglês
10.1016/0584-8539(79)80068-9
ISSN1873-3824
AutoresJ. D. Brown, J. Eric D. Davies,
Tópico(s)Thermodynamic properties of mixtures
ResumoThe relative merits of infrared and Raman spectroscopy in providing information about the motional freedoms of guest molecules in β-quinol cavities have been assessed by studying the vibrational band profiles of the N2, HCl, HBr, CO, CO2, N2O and C2H2 guest molecules. CO is the only diatomic molecule which can be studied using both techniques. N2, HCl and HBr cannot be studied using infrared spectroscopy because of the selection rule for N2, and because of interference from the host lattice bands in the HCl and HBr clathrates. The infrared data for the CO2 and N2O clathrates suggest non-rotating guest molecules with the Q branch being broadened and split into two components due to collisional broadening and the anisotropy of the rattling modes.
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