Diode laser spectroscopy of the hydrogen bond vibration ν2 OC---HF in a continuous wave supersonic jet

Abstract
The high resolution spectrum of the ν2 (C≡O) stretching vibration in the hydrogen bonded dimer, OC‐‐‐HF, has been recorded in a continuous wave (cw) supersonic molecular jet using a diode laser spectrometer. Spectroscopic analysis gives the following rovibrational parameters (in cm1): ν0=2167.69 9 04(11); B0=0.102 200 647(13); D0J =3.244(18)×107; B2=0.101 552 5(15); D2J =3.449(36)×107. Investigation of observed line profiles allows a lower limit of 0.68 ns to be made for the excited state vibrational predissociative lifetime.