Photodissociation of hydrogen halides in rare gas matrices, and the effect of hydrogen bonding

2000 ◽  
Vol 112 (8) ◽  
pp. 3803-3811 ◽  
Author(s):  
Martin Lorenz ◽  
Dieter Kraus ◽  
Markku Räsänen ◽  
Vladimir E. Bondybey
Keyword(s):  
Hydrogen Bonding ◽  
Rare Gas ◽  
Hydrogen Halides

Molecular structure of ArDF: An analysis of the bending mode in the rare gas–hydrogen halides

1981 ◽  
Vol 74 (4) ◽  
pp. 2133-2137 ◽  
Author(s):  
M. R. Keenan ◽  
L. W. Buxton ◽  
E. J. Campbell ◽  
A. C. Legon ◽  
W. H. Flygare
Keyword(s):  
Molecular Structure ◽  
Rare Gas ◽  
Hydrogen Halides ◽  
Bending Mode

scholarly journals Vibration-rotation spectra of hydrogen halides in rare-gas liquids: Q-branch absorption

2004 ◽  
Vol 76 (1) ◽  
pp. 241-246 ◽  
Author(s):  
A. Medina ◽  
J. M. M. Roco ◽  
A. C. Hernández ◽  
S. Velasco
Keyword(s):  
Near Infrared ◽  
Rare Gas ◽  
Physical Origin ◽  
Hydrogen Halides ◽  
Induced Dipole ◽  
Near Infrared Spectra ◽  
Physical Effects ◽  
Intense Absorption ◽  
Vibration Rotation ◽  
Dynamics Simulations

Near-infrared spectra of HCl highly diluted in liquid Ar show intense absorption in the P-R interbranch region, so-called Q-branch absorption. In spite of its relevance for the shape of the bands, its physical origin has been elusive to date. We employ molecular dynamics simulations to study the influence of some physical effects that could contribute to Q-branch absorption. We check that multipole-induced dipole induction mechanisms are not quantitatively relevant in this spectral region. We show that the particular characteristics of accurate HCl-Ar anisotropic potentials and the peculiar hindered rotational motion they provoke on the diatomic probe are essential to understand Q-branch absorption.

scholarly journals Low Energy Modes of the Hydrogen-Bonded Dimer of Benzoic Acid

1983 ◽  
Vol 2 (3-4) ◽  
pp. 189-199
Author(s):  
David E. Poeltl ◽  
Jeffrey K. McVey
Keyword(s):  
Hydrogen Bonding ◽  
Benzoic Acid ◽  
Ground State ◽  
Laser Excitation ◽  
Cluster Formation ◽  
Low Energy ◽  
Van Der Waals Complexes ◽  
Rare Gas ◽  
Free Jet ◽  
Rare Gas Atoms

Hydrogen bonding in isolated, cooled dimers of benzoic acid is explored following preparation in a free jet expansion. Analysis of the laser excitation spectrum in the low energy region allows for the identification of the modes involved in hydrogen bonding in the excited state of the dimer, and cluster formation is noted between the ground state dimers. Van der Waals complexes of the dimer with rare gas atoms are also identified. Assignments of the observed dimer modes have been made and the results are compared with previous studies in solution and matrices and with normal mode analyses.

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