Step-scan Fourier-transform infrared absorption spectroscopy of cubic solid acetylene clusters
Journal of Physical Chemistry A, ISSN: 1089-5639, Vol: 107, Issue: 24, Page: 4829-4833
2003
- 10Citations
- 9Captures
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Article Description
Step-scan Fourier-transform infrared (FTIR) absorption spectroscopy has been used to study large clusters of CH and CD formed in pulsed supersonic jets. The v stretching bands in the infrared spectra of CH and CD have been measured near 3230 and 2400 cm, respectively. The band positions show the formation of acetylene nanoclusters with the cubic solid structure. The deuterium isotopic shift is in good agreement with the predictions based on the harmonic oscillator model and confirms the assignment of the observed features to cubic CH and CD. This is the first infrared observation of cubic solid CD, and the v C-D stretching band was observed at 2399 cm. Furthermore, deconvolutions of CH spectra into Lorentzian components reveal a new feature at 3241 cm attributable to large amorphous clusters.
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