Vibrational overtone spectroscopy of the 4νOH+νOH’combination level of HOOHviasequential local mode–local mode excitation

1992 ◽  
Vol 96 (8) ◽  
pp. 5659-5667 ◽  
Author(s):  
X. Luo ◽  
P. R. Fleming ◽  
T. R. Rizzo
Keyword(s):  
Local Mode ◽  
Overtone Spectroscopy ◽  
Vibrational Overtone ◽  
Mode Excitation

Overtone intensities in neopentane and tetramethylsilane

2001 ◽  
Vol 79 (3) ◽  
pp. 279-290 ◽  
Author(s):  
M WP Petryk ◽  
B R Henry
Keyword(s):  
Photoacoustic Spectroscopy ◽  
Internal Standard ◽  
Vapour Phase ◽  
Absolute Intensity ◽  
Oscillator Strengths ◽  
Local Mode ◽  
Absorbance Spectroscopy ◽  
Vibrational Overtone ◽  
Moment Functions ◽  
Intracavity Laser

The CH vibrational overtone transitions of vapour phase neopentane-d0, -d6, -d9, and tetramethylsilane (TMS) are investigated via conventional absorbance spectroscopy and intracavity laser photoacoustic spectroscopy (ICL-PAS). The CH stretching overtones of neopentane-d0 are observed in the energy range Δ VCH = 3–9 (8 400 to 22 000 cm–1) and in the range Δ VCH = 3–8 for the remaining neopentanes and TMS. While we have extended the range of previous studies, our main focus in this work has been on overtone intensities. The oscillator strengths of the neopentane-d0 overtone transitions are determined directly by conventional absorbance spectroscopy for Δ VCH = 3–6 and via ICL-PAS with methane as an internal standard for Δ VCH = 4–7. The correspondence of measured intensities for the two techniques demonstrates the usefulness of the latter for higher overtone ICL-PAS spectra. The experimentally determined Morse parameters ω˜ and ω˜x as well as the harmonically coupled anharmonic oscillator (HCAO) model are used in conjunction with dipole moment functions that are derived from ab initio computations to calculate overtone transition intensities for the neopentanes and TMS. Key words: local mode, overtone transition, absolute intensity, photoacoustic spectroscopy.

scholarly journals Direct picosecond time resolution of unimolecular reactions initiated by local mode excitation

1986 ◽  
Vol 84 (3) ◽  
pp. 1932-1933 ◽  
Author(s):  
N. F. Scherer ◽  
F. E. Doany ◽  
A. H. Zewail ◽  
J. W. Perry
Keyword(s):  
Time Resolution ◽  
Local Mode ◽  
Unimolecular Reactions ◽  
Mode Excitation

Local mode mixing of the vibrational overtone manifold of the CH stretching modes in toluene

1988 ◽  
Vol 148 (4) ◽  
pp. 337-342 ◽  
Author(s):  
Pradip N. Ghosh ◽  
Prabhat K. Panja ◽  
Chandra M. Pal
Keyword(s):  
Local Mode ◽  
Vibrational Overtone ◽  
Mode Mixing

Vibrational overtone spectroscopy of jet-cooled methanol from 5000 to 14 000 cm−1

2005 ◽  
Vol 122 (4) ◽  
pp. 044314 ◽  
Author(s):  
David Rueda ◽  
Oleg V. Boyarkin ◽  
Thomas R. Rizzo ◽  
Andrei Chirokolava ◽  
David S. Perry
Keyword(s):  
Overtone Spectroscopy ◽  
Vibrational Overtone

State-to-state mode specificity in H + DOH(νOH = 1) → HD + OH(ν2 = 0) reaction: vibrational non-adiabaticity or local-mode excitation?

2018 ◽  
Vol 20 (1) ◽  
pp. 191-198 ◽  
Author(s):  
Bin Zhao ◽  
Zhigang Sun ◽  
Hua Guo
Keyword(s):  
Quantum Dynamics ◽  
State Of The Art ◽  
Local Mode ◽  
Interesting Observation ◽  
Mode Excitation ◽  
Mode Specificity

State-of-the-art full dimensional state-to-state quantum dynamics reveal a startling observation in which the DOH(νOH = 1) molecule reacts with a H atom to produce a vibrationless OH product. This interesting observation is attributed to a small OD excited local-mode component in the reactant wavefunction.

Vibrational Overtone Spectroscopy of Jet-Cooled Aminophenols as a Probe for Rotational Isomers

2004 ◽  
Vol 108 (20) ◽  
pp. 4420-4427 ◽  
Author(s):  
Timothy W. Robinson ◽  
Henrik G. Kjaergaard ◽  
Shun-ichi Ishiuchi ◽  
Minako Shinozaki ◽  
Masaaki Fujii
Keyword(s):  
Rotational Isomers ◽  
Overtone Spectroscopy ◽  
Vibrational Overtone
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