Van der Waals complexes of xanthione and benzopyranthione with rare gases. S2S0 fluorescence excitation spectroscopy and microscopic solvation effects

1992 ◽  
Vol 194 (3) ◽  
pp. 196-202 ◽  
Author(s):  
Marek Ludwiczak ◽  
Hemant K. Sinha ◽  
Ronald P. Steer
Keyword(s):  
Van Der Waals ◽  
Van Der Waals Complexes ◽  
Rare Gases ◽  
Fluorescence Excitation ◽  
Solvation Effects

scholarly journals Perfluorination of Aromatic Compounds Reinforce Their van der Waals Interactions with Rare Gases: The Rotational Spectrum of Pentafluoropyridine-Ne

Molecules ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 17
Author(s):  
Alberto Macario ◽  
Susana Blanco ◽  
Ibon Alkorta ◽  
Juan Carlos López
Keyword(s):  
Theoretical Calculations ◽  
Van Der Waals ◽  
Supersonic Jet ◽  
Van Der Waals Interactions ◽  
Van Der Waals Complexes ◽  
Rotational Spectrum ◽  
Rare Gases ◽  
Chirped Pulse ◽  
Pulse Microwave ◽  
Perfluorinated Compound

The rotational spectrum of the pentafluoropyridine-Ne complex, generated in a supersonic jet, has been investigated using chirped-pulse microwave Fourier transform spectroscopy in the 2–8 GHz range. The spectra of the 20Ne and 22Ne species have been observed, and the rotational constants have been used to determine the structure of the complex. This structure, and those of the previously experimentally studied complexes benzene-Ne and pyridine-Ne, are an excellent benchmark for the theoretical calculations on these adducts. These complexes and hexafluorobenzene-Ne have been investigated at the CCSD/6-311++G(2d,p) level. The calculations reproduce the experimental structures well and show how the van der Waals complexes are stronger for the perfluorinated compound.

scholarly journals Proton Tunneling In 5-Chlorotropolone-M1 (M = Kr, Xe, CH4) Van Der Waals Complexes

1995 ◽  
Vol 15 (2-4) ◽  
pp. 229-247
Author(s):  
Hiroshi Sekiya ◽  
Taiji Nakajima ◽  
Hidenori Hamabe ◽  
Akira Mori ◽  
Hitoshi Takeshita ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Van Der Waals Complexes ◽  
Excitation Spectra ◽  
Fluorescence Excitation ◽  
Proton Tunneling ◽  
Tunneling Splitting ◽  
Free Jet ◽  
Tunneling Splittings ◽  
Fluorescence Excitation Spectra ◽  
Intramolecular Motions

The S1-S0 fluorescence excitation spectra of 5-chlorotropolone-M1 (M = Kr, Xe, CH4) van der Waals (vdW) complexes in the region near the electronic origin have been measured in a supersonic free jet to investigate the effect of the vdW interactions on proton tunneling. Tunneling splittings have been observed in the vdW vibrations as well as in the 000 transitions of the Kr and Xe complexes. The 000 tunneling splitting of the 5-chlorotropolone-(CH4)1 complex is significantly smaller than those of the Kr and Xe complexes. It has been suggested that the vdW vibrations couple with intramolecular motions, leading to a higher potential energy barrier to tunneling in the CH4 complex. The results of the 5- chlorotropolone complexes have been compared to those of the tropolone complexes.

Shifts in fluorescence excitation spectra of anthracene-argon van der waals complexes

1985 ◽  
Vol 92 (2-3) ◽  
pp. 187-197 ◽  
Author(s):  
W.E. Henke ◽  
Yu Weijun ◽  
H.L. Selzle ◽  
E.W. Schlag ◽  
D. Wutz ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Van Der Waals Complexes ◽  
Excitation Spectra ◽  
Fluorescence Excitation ◽  
Fluorescence Excitation Spectra

Structure and energetics of van der Waals complexes of carbon monoxide with rare gases. He–CO and Ar–CO

1994 ◽  
Vol 101 (6) ◽  
pp. 4964-4974 ◽  
Author(s):  
B. Kukawska‐Tarnawska ◽  
G. Chal/asiński ◽  
K. Olszewski
Keyword(s):  
Carbon Monoxide ◽  
Van Der Waals ◽  
Van Der Waals Complexes ◽  
Rare Gases

S2−S0Spectroscopy of the van der Waals Complexes of Azulene with Rare Gases

1996 ◽  
Vol 100 (11) ◽  
pp. 4375-4381 ◽  
Author(s):  
Osama K. Abou-Zied ◽  
Hemant K. Sinha ◽  
Ronald P. Steer
Keyword(s):  
Van Der Waals ◽  
Van Der Waals Complexes ◽  
Rare Gases
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