THE ROLE OF SYMMETRIC-STRETCH VIBRATION IN ASYMMETRIC-STRETCH VIBRATIONAL FREQUENCY SHIFT: THE CASE OF 2CH EXCITATION INFRARED SPECTRA OF ACETYLENE-HYDROGEN VAN DER WAALS COMPLEX

2016 ◽  
Author(s):  
Hui Li ◽  
Yu Zhai ◽  
Xiao-Long Zhang ◽  
Yong-Tao Ma ◽  
Dan Hou
Keyword(s):  
Frequency Shift ◽  
Infrared Spectra ◽  
Vibrational Frequency ◽  
Van Der Waals ◽  
Van Der Waals Complex ◽  
Stretch Vibration ◽  
Asymmetric Stretch

Detection of a higher energy isomer of the CO–N2O van der Waals complex and determination of two of its intermolecular frequencies

2017 ◽  
Vol 19 (2) ◽  
pp. 1610-1613 ◽  
Author(s):  
A. J. Barclay ◽  
C. Lauzin ◽  
S. Sheybani-Deloui ◽  
K. H. Michaelian ◽  
N. Moazzen-Ahmadi
Keyword(s):  
Carbon Monoxide ◽  
Infrared Spectra ◽  
Van Der Waals ◽  
Van Der Waals Complex ◽  
Asymmetric Stretch

Infrared spectra in the carbon monoxide CO stretch region (∼2150 cm−1) and in the ν3 asymmetric stretch region of N2O (∼2223 cm−1) are assigned to the previously unobserved O-bonded form of the CO–N2O dimer (“isomer 2”).

High-resolution UV spectroscopy of vibronic bands in p-difluorobenzene and p-difluorobenzene–Ar: The role of Herzberg–Teller coupling

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1179-1186 ◽  
Author(s):  
R. Sussmann ◽  
R. Neuhauser ◽  
H. J. Neusser
Keyword(s):  
High Resolution ◽  
Electronic Excitation ◽  
Uv Spectroscopy ◽  
Van Der Waals ◽  
Rotational Structure ◽  
Moments Of Inertia ◽  
Van Der Waals Complex ◽  
Two Photon ◽  
Photon Ionization

Rotationally resolved spectra of two bands in the S1 → S0 transition of the p-difluorobenzene molecule and its van der Waals complex with Ar have been measured by mass-selective resonance-enhanced two-photon ionization. The rotational structure of the 000 and the 2710 bands in the monomer as well as in the complex differ from each other. They can be theoretically reproduced assuming a transition moment oriented along the short in-plane axis of the molecule in the case of the 000 transition and the long in-plane axis in the case of the 2710 transition. Since the magnitude of the moments of inertia is changed in the complex by adding an Ar atom, complexation leads to a change of rotational structures of the same band. The analysis of the rotational structure points to Herzberg–Teller coupling by vibronic interaction with the S2 (1B1u) state as the mechanism responsible for the appearance of the 2710 band. The rotational constants determined from a fit of the spectra yield an effective van der Waals distance of 3.55 (2) Å (1 Å = 10−10 m) of the Ar atom from the p-difluorobenzene plane, which decreases by 0.06 Å on electronic excitation to the S1 state.

Exploring the OH-initiated reactions of styrene in the atmosphere and the role of Van der Waals complex

Chemosphere ◽  
2021 ◽  
pp. 131004
Author(s):  
Xiaoqing Wu ◽  
Qifeng Hou ◽  
Jiabin Huang ◽  
Jiajue Chai ◽  
Feng Zhang
Keyword(s):  
Van Der Waals ◽  
Van Der Waals Complex

scholarly journals Nonadditive intermolecular forces in Arn–HF van der Waals clusters: Effects on the HF vibrational frequency shift

1999 ◽  
Vol 111 (18) ◽  
pp. 8378-8383 ◽  
Author(s):  
Jeremy M. Hutson ◽  
Suyan Liu ◽  
Jules W. Moskowitz ◽  
Zlatko Bačić
Keyword(s):  
Frequency Shift ◽  
Vibrational Frequency ◽  
Van Der Waals ◽  
Intermolecular Forces ◽  
Van Der Waals Clusters
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