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KAZUKI YOSHIOKA AND DAVID T. ANDERSON, Depertment of Chemistry, University of Wyoming, Laramie, WY 82071-3838.
Infrared spectroscopic studies of CH3F isolated in solid parahydrogen (99.99% purity) revaled multiple peaks in the
3 C-F stretch region. While the observed fine structure was first thought to be due to rotational motion of the CH3F, further studies of samples with elevated orthohydrogen (o-H2) concentrations clearly indicate the observed peaks are due to CH3F-(o-H2)n clustering. This has enabled infrared studies of CH3F-(o-H2)n (with n=1 to 12) clusters in solid parahydrogen. The observed shifts in the
3 vibration with the number of o-H2 molecules clustering is similar to the shifts measured in (Ar)n-HF clusters synthesized in helium nanodroplets . Experimental results in support of this interpretation will be presented including 2
3 and CD3F studies.