Role of Torsion-Vibration Coupling in the Overtone Spectrum and Vibrationally Mediated Photochemistry of CH3OOH and HOOH

2017 ◽  
Vol 121 (48) ◽  
pp. 9262-9274 ◽  
Author(s):  
Laura C. Dzugan ◽  
Jamie Matthews ◽  
Amitabha Sinha ◽  
Anne B. McCoy
Keyword(s):  
Torsion Vibration ◽  
Vibration Coupling

Tracking molecular structure deformation of nitrobenzene and its torsion–vibration coupling by intense pumping CARS

2016 ◽  
Vol 25 (11) ◽  
pp. 114210
Author(s):  
Chang Wang ◽  
Hong-Lin Wu ◽  
Yun-Fei Song ◽  
Xing He ◽  
Yan-Qiang Yang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Structure Deformation ◽  
Torsion Vibration ◽  
Vibration Coupling

Photofragment mapping of intramolecular motion

1990 ◽  
Vol 332 (1625) ◽  
pp. 245-258 ◽  
Keyword(s):  
Photon Absorption ◽  
Pair Correlations ◽  
Overtone Band ◽  
Vector Correlations ◽  
Quantitative Estimates ◽  
Fragment Pair ◽  
Intramolecular Motion ◽  
Axis Rotation ◽  
Vibration Coupling

The intramolecular motion in selected rovibrational levels in HOOH and HOOD, populated by tunable, pulsed laser excitation in the third O-H overtone band, has been probed via ‘photofragment mapping’ following secondary photon absorption. Quantum state distributions, vector correlations and vibrational {vx, v2) and rotational jOC CZV2)) OH(D) fragment pair correlations have been obtained using polarized, Doppler resolved laser induced fluorescence techniques. The results provide quantitative estimates of the extensive intramolecular redistribution of energy among the overtone levels and highlight the role of a-axis rotation in promoting rotation—vibration coupling.

scholarly journals Probing the origins of vibrational mode specificity in intramolecular dynamics through picosecond time-resolved photoelectron imaging studies

2017 ◽  
Vol 19 (7) ◽  
pp. 5051-5062 ◽  
Author(s):  
Julia A. Davies ◽  
Laura E. Whalley ◽  
Katharine L. Reid
Keyword(s):  
Energy Flow ◽  
Vibrational Mode ◽  
Imaging Studies ◽  
Intramolecular Dynamics ◽  
Photoelectron Imaging ◽  
Time Resolved ◽  
Torsion Vibration ◽  
Vibration Coupling ◽  
Intramolecular Energy Flow ◽  
Mode Specificity

Enhanced torsion-vibration coupling associated with a selected vibrational mode is shown to accelerate intramolecular energy flow in p-fluorotoluene.

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