Abstract
We report high resolution Fourier transform microwave spectra of (pH2)N-OC32S and (pH2)N-OC34S clusters in the size range from N=2 to 5. Observation of the J=1–0 and J=2–1 transitions allowed for determination of the rotational (B) and quartic distortion (D) constants for each N. Comparison with theory (Paesani et al., 2003) reveals that the predicted B values are of good quality (all within 100MHz of the actual values), while the predicted D values are an order of magnitude too high. Results from linear molecule Kraitchman analyses for clusters with N≤5 are consistent with theoretical calculations which suggest that the initial pH2 density accumulates in a donut ring about the carbon-oxygen bond.
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