High resolution electronic spectra of 7-azaindole and its Ar atom van der Waals complex

2005 ◽  
Vol 123 (9) ◽  
pp. 094306 ◽  
Author(s):  
Cheolhwa Kang ◽  
John T. Yi ◽  
David W. Pratt
Keyword(s):  
High Resolution ◽  
Electronic Spectra ◽  
Van Der Waals ◽  
Van Der Waals Complex

High-resolution spectroscopic study of the H2O–CO2 van der Waals complex in the 2OH overtone range

2019 ◽  
Vol 118 (11) ◽  
pp. e1706776
Author(s):  
C. Lauzin ◽  
A. C. Imbreckx ◽  
T. Foldes ◽  
T. Vanfleteren ◽  
N. Moazzen-Ahmadi ◽  
...  
Keyword(s):  
High Resolution ◽  
Spectroscopic Study ◽  
Van Der Waals ◽  
Van Der Waals Complex

Theory Untangles the High-Resolution Infrared Spectrum of the ortho-H2-CO van der Waals Complex

Science ◽  
2012 ◽  
Vol 336 (6085) ◽  
pp. 1147-1150 ◽  
Author(s):  
P. Jankowski ◽  
A. R. W. McKellar ◽  
K. Szalewicz
Keyword(s):  
High Resolution ◽  
Infrared Spectrum ◽  
Van Der Waals ◽  
Van Der Waals Complex

High resolution spectroscopy of the ν3band of the van der Waals complex Ar—DCOOH

2003 ◽  
Vol 101 (10) ◽  
pp. 1511-1515
Author(s):  
FRANK MADEJA ◽  
ANDREAS HECKER ◽  
SIMON EBBINGHAUS ◽  
MARTINA HAVENITH
Keyword(s):  
High Resolution ◽  
Van Der Waals ◽  
High Resolution Spectroscopy ◽  
Van Der Waals Complex

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.

The structure of fluorene (C13H10) and the fluorine–argon van der Waals complex from a high-resolution near ultraviolet spectrum

1984 ◽  
Vol 62 (12) ◽  
pp. 1293-1299 ◽  
Author(s):  
W. Leo Meerts ◽  
W. A. Majewski ◽  
W. M. van Herpen
Keyword(s):  
High Resolution ◽  
Van Der Waals ◽  
Argon Atom ◽  
Experimental Result ◽  
Single Frequency ◽  
Position Vector ◽  
Fluorescence Excitation ◽  
Mass System ◽  
Van Der Waals Complex ◽  
Near Ultraviolet

The high-resolution fluorescence excitation spectrum of the fluorene molecule and its van der Waals complex with argon has been studied. Rotationally resolved spectra were obtained by combining a well-collimated supersonic molecular beam with a single frequency tunable ultraviolet (uv) source. The S1 ← S0[Formula: see text] vibronic transitions in fluorene and fluorine–argon were observed. The rotational constants of both molecules were determined and from these the structure of the fluorine–argon complex has been deduced. The argon atom is located above the middle five-membered ring. The coordinates of the position vector of the argon atom in the complex in the centre-of-mass system of fluorene are r = (3.46 ± 0.03) Å and [Formula: see text]. A model calculation of the fluorine–Ar structure was found to be in quite good agreement with the experimental result. The newly introduced inertial defect of the complex ΔIc = −7(3) amu Å2 provided an experimental measure of the zero-point motion of argon in the complex.

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