ausblenden:
Schlagwörter:
Infrared Spectrum; High Resolution; Alkyne; Fermi Resonance; ab initio Calculations
Zusammenfassung:
High resolution infrared spectra of FCCCl have been measured and analyzed by polynomial
methods. In the region below 350 cm–1, the analysis is straightforward and yields parameters for the ʋ4 = 1 and ʋ5 = 1 states. Between 350 and 800 cm–1 there are strong anharmonic interactions in the 2ʋ5/ʋ4 + ʋ5/ʋ3/2ʋ4 tetrad which have been unravelled with the use of a model that employs ab initio interaction constants. Observed and theoretically predicted wavenumbers are in excellent agreement for all bands studied.