2000
DOI: 10.1063/1.1323226
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Methane isotopomers adsorbed on KBr(100): An exploration of adsorbate orientation and rotation

Abstract: The adsorption of CH4, CH2D2, and CHD3 on the single crystal (100) surfaces of KBr in the temperature range 5–42 K was studied using polarized infrared spectroscopy. The spectra of CH4 at 42 K show two features in the ν3 C–H stretching region: the higher frequency feature with a transition dipole tilted 18° away from the surface normal and the lower frequency component at 85° from the surface normal. These data are consistent with a slightly tilted tripod for CH4 on KBr(100). With decreasing temperature a spli… Show more

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