scholarly journals Molecular polymorphism: microwave spectra, equilibrium structures, and an astronomical investigation of the HNCS isomeric family

2016 ◽  
Vol 18 (32) ◽  
pp. 22693-22705 ◽  
Author(s):  
Brett A. McGuire ◽  
Marie-Aline Martin-Drumel ◽  
Sven Thorwirth ◽  
Sandra Brünken ◽  
Valerio Lattanzi ◽  
...  
Keyword(s):  
Molecular Polymorphism ◽  
Rotational Spectra ◽  
Microwave Spectra ◽  
Equilibrium Structures

The rotational spectra of four isomers of the [H, S, C, N] isomeric family are obtained by FTMW spectroscopy, enabling an astronomical search for these species.

scholarly journals Microwave Spectra of Dimethylether (CH3)2O and (CD3)2O in Excited Torsional States

1978 ◽  
Vol 33 (12) ◽  
pp. 1498-1510 ◽  
Author(s):  
H. Lutz ◽  
H. Dreizler
Keyword(s):  
Fine Structure ◽  
Excited States ◽  
Rotational Spectra ◽  
Microwave Spectra

Abstract The rotational spectra of the torsional excited states v̅n = 11,12,21, 22, 23 have been measured and assigned. The torsional fine structure was used to determine the coefficients V3 and V' 12 of the hindering potential. For (CH3)2O : V3 = 2618 ± 4 cal/mole, V'12 = 18 ± 8 cal/mole, for (CD3)2O : V3 = 2572 ± 6 cal/mole, V'12 = 29 ± 12 cal/mole, V12 was correlated to V3 .

scholarly journals Microwave Spectra of Furazan. III. Rotation Spectra of Vibrationally Excited States

1990 ◽  
Vol 45 (9-10) ◽  
pp. 1117-1130
Author(s):  
Otto L. Stiefvater
Keyword(s):  
Excited States ◽  
Heterocyclic Compound ◽  
Microwave Spectroscopy ◽  
Vibrational Modes ◽  
Vibrationally Excited ◽  
Rotational Constants ◽  
Rotational Spectra ◽  
Microwave Spectra

Abstract The pure rotational spectra of molecules in 21 vibrationally excited states of the heterocyclic compound furazan (C2H2N2O) have been detected and studied by DRM microwave spectroscopy. Rotational parameters are reported for the 12 fundamental levels below 1500 cm-1 , and the contri-butions from 10 vibrational modes to the effective rotational constants and to the inertia defect of furazan are calculated.

Rotational spectra of 1-chloro-2-fluoroethylene. II. Equilibrium structures of the cis and trans isomer

2006 ◽  
Vol 125 (5) ◽  
pp. 054307 ◽  
Author(s):  
Cristina Puzzarini ◽  
Gabriele Cazzoli ◽  
Alberto Gambi ◽  
Jürgen Gauss
Keyword(s):  
Trans Isomer ◽  
Rotational Spectra ◽  
Equilibrium Structures ◽  
Cis And Trans

Rotational spectra and equilibrium structures of H2SiS and Si2S

2011 ◽  
Vol 134 (3) ◽  
pp. 034306 ◽  
Author(s):  
Michael C. McCarthy ◽  
Carl A. Gottlieb ◽  
Patrick Thaddeus ◽  
Sven Thorwirth ◽  
Jürgen Gauss
Keyword(s):  
Rotational Spectra ◽  
Equilibrium Structures

A Contribution to the Microwave Spectra of eis- and trans-2,3-Dimethyloxirane by Fourier Transform Spectroscopy

1992 ◽  
Vol 47 (10) ◽  
pp. 1051-1057 ◽  
Author(s):  
Holger Hartwig ◽  
Helmut Dreizler
Keyword(s):  
Fourier Transform ◽  
Internal Rotation ◽  
Fourier Transform Spectroscopy ◽  
Rotational Spectra ◽  
Potential Barriers ◽  
Microwave Spectra ◽  
Rotation Parameters

AbstractMicrowave Fourier transform spectroscopy was used to reinvestigate the rotational spectra of cisand trans-2,3-dimethyloxirane. The potential barriers hindering the internal rotation, internal rotation parameters, and partial rs-structures were determined.

scholarly journals High Resolution Microwave Spectra of Pyridine-N-oxideanda-Picoline-N-oxide

1989 ◽  
Vol 44 (12) ◽  
pp. 1196-1200 ◽  
Author(s):  
N. Heineking ◽  
H. Dreizler ◽  
K. Endo ◽  
Y. Kamura
Keyword(s):  
High Resolution ◽  
Internal Rotation ◽  
Microwave Spectroscopy ◽  
Coupling Constants ◽  
Centrifugal Distortion ◽  
Rotational Spectra ◽  
Microwave Spectra ◽  
Quadrupole Coupling ◽  
Rotation Motion ◽  
Centrifugal Distortion Constants

Abstract The rotational spectra of pyridine-N-oxide and x-picoline-N-oxide ( = 2-methvlpyridine-N-oxide) have been observed by means of pulsed microwave spectroscopy. For both molecules, the 14N quadrupole coupling constants have been obtained. For α-picoline-N-oxide. in addition the parameters of the internal rotation motion and the centrifugal distortion constants have been determined.

scholarly journals Low Resolution Rotational Spectra of Phenol

2018 ◽  
Vol 10 (6) ◽  
pp. 77
Author(s):  
Ch. O. Qajar ◽  
S. B. Kazymova ◽  
M. R. Menzeleyev ◽  
A. S. Gasanova
Keyword(s):  
High Resolution ◽  
Spectral Data ◽  
Spectral Lines ◽  
Low Resolution ◽  
Rotational Spectra ◽  
Microwave Spectra ◽  
Absorption Level

The modeling of low-resolution (LR) microwave spectra of phenol C6H5OH molecule has been provided in the frequency regions of 0-700 GHz basing on high-resolution (HR) microwave spectral data. The frequency ranges of most intensive absorption level of low-resolution microwave spectra determined. The most intensive spectral lines forming spectra extremums are developed. The recommendations related to perspectives of practical use of achieved results are given.

Rotational Spectra of CH2DCCH and CH3CCD: Experimental and ab Initio Equilibrium Structures of Propyne

1993 ◽  
Vol 160 (2) ◽  
pp. 471-490 ◽  
Author(s):  
M. Leguennec ◽  
J. Demaison ◽  
G. Wlodarczak ◽  
C.J. Marsden
Keyword(s):  
Ab Initio ◽  
Rotational Spectra ◽  
Equilibrium Structures

ChemInform Abstract: Rotational Spectra of CH2DCCH and CH3CCD: Experimental and ab initio Equilibrium Structures of Propyne.

ChemInform ◽  
2010 ◽  
Vol 24 (44) ◽  
pp. no-no
Author(s):  
M. LE GUENNEC ◽  
J. DEMAISON ◽  
G. WLODARCZAK ◽  
C. J. MARSDEN
Keyword(s):  
Ab Initio ◽  
Rotational Spectra ◽  
Equilibrium Structures
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