Rovibrational analysis of an intermolecular hydrogen-bonded vibration: The ν16 band of HCN---HF

Abstract
The infrared spectrum of the intermolecular bending vibration, the ν16 band, of the heterodimer HCN‐‐‐HF has been obtained with 0.010 cm1 resolution, and the rotational structure of this band has been assigned. The spectroscopic constants of the ν16 state in cm1 are: ν0=550.0285(2); B6=0.117 652 9(10); D6J =0.2791(5)×106; q6=0.579(8)×104; α6=−0.002 137(1), where the uncertainties cited are one standard deviation.