Fundamental stretching frequencies in 1H13C14N– –1H19F: J-dependent predissociative excited state lifetimes in ν3 (C≡N) stretching vibration
- 15 September 1991
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 95 (6) , 3980-3990
- https://doi.org/10.1063/1.460805
Abstract
Static gas phase rovibrational analyses have been used to determine the four fundamental stretching band origin frequencies (in cm−1) of 1H13C14N– – –1H19F: ν1=3716.100(3), ν2=3292.1029(3), ν3=2088.9209(7), ν4=167.407(5). Estimated lifetimes in the ν1 and ν3 vibrationally predissociating states are determined to be τ(ν1)=0.052(7) ns; and τ(ν3)=1.1(3) ns, J’≤16; τ(ν3)=0.32(5) ns, J’≥17. The availability of a higher HF rotational energy channel is proposed as a possible mechanism for explaining this sudden change in excited state lifetime.Keywords
This publication has 28 references indexed in Scilit:
- Diode laser spectroscopy of the hydrogen bond vibration ν2 OC---HF in a continuous wave supersonic jetThe Journal of Chemical Physics, 1989
- Supersonic molecular beam and static gas phase spectroscopy of intermolecular hot bands associated with ν116O12C---1H19FChemical Physics Letters, 1988
- Rovibrational analysis of the ν71 intermolecular hydrogen bond bending vibration in HCN---HF using far infrared fourier transform spectroscopyChemical Physics Letters, 1988
- The Vibrational Spectroscopy and Dynamics of Weakly Bound Neutral ComplexesScience, 1988
- Fermi resonance perturbations between (νβ=n) and (νσ=1, νβ=n−2) states in the rotational spectrum of HCN…HFChemical Physics Letters, 1987
- The argon–hydrogen fluoride binary complex: An example of a long lived metastable systemThe Journal of Chemical Physics, 1986
- van der Waals potentials from the infrared spectra of rare gas–HF complexesThe Journal of Chemical Physics, 1986
- Spectroscopiċ investigations of hydrogen bonding interactions in the gas phase. X. Properties of the hydrogen-bonded heterodimer HCN∙ ∙ ∙HF determined from hyperfine coupling and centrifugal distortion effects in its ground-state rotational spectrumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1985
- Spectroscopic investigations of hydrogen bonding interactions in the gas phase. I. The determination of the geometry, dissociation energy, potential constants and electric dipole moment of the hydrogen-bonded heterodimer HCN • • • HF from its microwave rotational spectrumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1980
- Hydrogen bonding in the gas phase: the infrared spectra of complexes of hydrogen fluoride with hydrogen cyanide and methyl cyanideProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1971