Identification and geometry of dimers of phosphine and the hydrogen halides HCl and HBr from their rotational spectra detected by pulsed-nozzle, fourier-transform microwave spectroscopy

1982 ◽  
pp. 997 ◽  
Author(s):  
A. C. Legon ◽  
L. C. Willoughby
Keyword(s):  
Fourier Transform ◽  
Microwave Spectroscopy ◽  
Hydrogen Halides ◽  
Rotational Spectra ◽  
Fourier Transform Microwave Spectroscopy ◽  
Pulsed Nozzle

scholarly journals Rotational spectra of van der Waals complexes: pyrrole–Ne and pyrrole–Ne2

2020 ◽  
Vol 22 (44) ◽  
pp. 25652-25660 ◽  
Author(s):  
Isabel Peña ◽  
Carlos Cabezas
Keyword(s):  
Fourier Transform ◽  
Van Der Waals ◽  
Microwave Spectroscopy ◽  
Frequency Region ◽  
Van Der Waals Complexes ◽  
Chirped Pulse ◽  
Rotational Spectra ◽  
Fourier Transform Microwave Spectroscopy

Rotational spectra of van der Waals complexes pyrrole–Ne and pyrrole–Ne2 have been investigated by chirped pulse Fourier transform microwave spectroscopy in the 2–8 GHz frequency region.

Rotational spectrum and properties of the hydrogen-bonded heterodimer H 2 O· · · HCN from pulsed-nozzle, Fourier-transform microwave spectroscopy

1984 ◽  
Vol 396 (1811) ◽  
pp. 405-423 ◽  
Keyword(s):  
Fourier Transform ◽  
Microwave Spectroscopy ◽  
Coupling Constants ◽  
Spectroscopic Constants ◽  
Rotational Spectrum ◽  
Quadrupole Coupling ◽  
Nuclear Quadrupole ◽  
Fourier Transform Microwave Spectroscopy ◽  
Pulsed Nozzle ◽  
Hydrogen Bonded

The ground state rotational spectrum of a hydrogen-bonded heterodimer formed from water and hydrogen cyanide has been detected and measured by using the technique of pulsed-nozzle, Fourier-transform microwave spectroscopy. Rotational constants ( B 0 , C 0 ) centrifugal distortion constants ( ∆ J , ∆ JK ) and, where appropriate, 14 N-, D- or 17 O-nuclear quadrupole coupling constants have been determined for the following isotopic species; H 2 16 O· · · HC 14 N, H 2 18 O· · · HC 14 N, H 2 16 O· · · HC 15 N, HD 16 O· · · HC 15 N, D 2 16 O· · · HC 15 N, H 2 16 O· · · DC 15 N, HD 16 O· · · DC 15 N and H 2 17 O· · · HC 15 N. An analysis of these spectroscopic constants indicates that the heterodimer is effectively planar, with a pair of equivalent protons and the arrangement H 2 O· · · HCN. The intermolecular interaction is through a hydrogen bond between HCN and H 2 O and the distance between the O and C nuclei r (O· · · C) is 3.157 Å (1Å = 10 -10 m). An interpretation of the nuclear quadrupole coupling constants leads to the conclusion that arccos <cos 2 Φ > ½ ≈ 51°, where Φ is the angle between the local C 2 axis of H 2 O and the a -axis of the complex; and that arccos <cos 2 θ > ½ ≈ 10°, where θ is the angle between the HCN axis and the a -axis. The intermolecular stretching force constant k σ = 11 Nm -1 has been determined from ∆ J .

scholarly journals Electron-withdrawing effects on the molecular structure of 2- and 3-nitrobenzonitrile revealed by broadband rotational spectroscopy and their comparison with 4-nitrobenzonitrile

2018 ◽  
Vol 20 (34) ◽  
pp. 22210-22217 ◽  
Author(s):  
Jack B. Graneek ◽  
William C. Bailey ◽  
Melanie Schnell
Keyword(s):  
Molecular Structure ◽  
Fourier Transform ◽  
Microwave Spectroscopy ◽  
Rotational Spectroscopy ◽  
Frequency Range ◽  
Chirped Pulse ◽  
Rotational Spectra ◽  
Fourier Transform Microwave Spectroscopy

The rotational spectra of 2- and 3-nitrobenzonitrile were recorded via chirped-pulse Fourier transform microwave spectroscopy in the frequency range of 2–8 GHz.

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