High resolution infrared and Raman spectra of (13)C(12)CD2: The CD stretching fundamentals and associated combination and hot bands

The Journal of Chemical Physics
Gianfranco Di LonardoD Bermejo

Abstract

Infrared and Raman spectra of mono (13)C fully deuterated acetylene, (13)C(12)CD2, have been recorded and analysed to obtain detailed information on the C-D stretching fundamentals and associated combination, overtone, and hot bands. Infrared spectra were recorded at an instrumental resolution ranging between 0.006 and 0.01 cm(-1) in the region 1800-7800 cm(-1). Sixty new bands involving the ν1 and ν3 C-D stretching modes also associated with the ν4 and ν5 bending vibrations have been observed and analysed. In total, 5881 transitions have been assigned in the investigated spectral region. In addition, the Q branch of the ν1 fundamental was recorded using inverse Raman spectroscopy, with an instrumental resolution of about 0.003 cm(-1). The transitions relative to each stretching mode, i.e., the fundamental band, its first overtone, and associated hot and combination bands involving bending states with υ4 + υ5 up to 2 were fitted simultaneously. The usual Hamiltonian appropriate to a linear molecule, including vibration and rotation l-type and the Darling-Dennison interaction between υ4 = 2 and υ5 = 2 levels associated with the stretching states, was adopted for the analysis. The standard deviation for each global fit is ≤0.0004...Continue Reading

References

Apr 12, 2013·The Journal of Chemical Physics·Mattia VillaLuciano Fusina

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Citations

Dec 22, 2015·Physical Chemistry Chemical Physics : PCCP·Filippo TamassiaGianfranco Di Lonardo

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