Infrared spectrum and molecular constants of CO2 in the 1.4–1.7 μm atmospheric window by very high resolution Fourier transform spectroscopy

1980 ◽  
Vol 58 (11) ◽  
pp. 1560-1569 ◽  
Author(s):  
J. P. Maillard ◽  
M. Cuisenier ◽  
Ph. Arcas ◽  
E. Arié ◽  
C. Amiot
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Accurate Determination ◽  
Spectroscopic Constants ◽  
Fourier Transform Spectrometer ◽  
Molecular Constants ◽  
Atmospheric Window ◽  
Very High

The spectrum of CO2 has been recorded in the 1.4–1.7 μm atmospheric window using the very high resolution Fourier transform spectrometer of the Meudon Observatory. This laboratory study has allowed the accurate determination of the spectroscopic constants previously evaluated from the Venus spectrum.

High-Resolution Infrared Spectrum of Diazirine, H2CN2. Rovibrational Analysis of the Methylene Deformation Band

1988 ◽  
Vol 43 (4) ◽  
pp. 331-337 ◽  
Author(s):  
A. Gambi ◽  
A. Baldacci ◽  
S. Giorgianni
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Least Squares ◽  
Deformation Band ◽  
Fourier Transform Spectrometer ◽  
Centrifugal Distortion ◽  
Molecular Constants ◽  
Centrifugal Distortion Constants

Abstract The infrared spectrum of diazirine has been recorded at Doppler resolution with a high informa­tion Fourier transform spectrometer. The ν3 fundamental has been reinvestigated and the overall assignment of the rovibrational transitions has been carried out. From the least-squares analysis a more accurate set of molecular constants including the sextic centrifugal distortion constants has been determined for the level υ3 = 1 and will be reported here. The higher resolution achieved here allowed the assignment of weaker lines and many Q branch transitions. Moreover many blended lines have now been resolved and could be properly assigned.

The infrared spectrum and molecular constants of CO2 in the 2 μm region

1983 ◽  
Vol 61 (6) ◽  
pp. 857-866 ◽  
Author(s):  
Ph. Arcas ◽  
E. Arie ◽  
M. Cuisenier ◽  
J. P. Maillard
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Good Accuracy ◽  
Vibrational Energy ◽  
Fourier Transform Spectroscopy ◽  
Molecular Constants ◽  
Effective Constants

The spectrum of CO2 has been recorded in the 2 μm region using high resolution Fourier transform spectroscopy. The effective constants have been determined with good accuracy for the (2001, 0401) and (211l, 0511) triads and the 0112–0000 transition. In addition, the vibrational energy of the (3001, 0601)1V level, previously given, has been corrected. The Coriolis resonance, strongly perturbing the (211e1, 051e1)m and (4000, 0800)n levels, has been studied.

The high-resolution infrared spectrum of BrCl

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1145-1154 ◽  
Author(s):  
Hiromichi Uehara ◽  
Toichi Konno ◽  
Yasushi Ozaki ◽  
Koui Horiai ◽  
Kuniaki Nakagawa ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Standard Deviation ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Potential Function ◽  
Internuclear Distance ◽  
Spectral Lines ◽  
Fourier Transform Spectrometer ◽  
Isotopic Species ◽  
Correction Terms

The high-resolution infrared spectrum of BrCl has been observed with a Fourier transform spectrometer. About 850 spectral lines for the Δν = 1 sequences of the four isotopic species, 79Br35Cl, 81Br35Cl, 79Br37Cl, and 81Br37Cl have been measured between 417 and 461 cm−1. They have been fitted with a standard deviation of 0.000 146 cm−1 to a Dunham potential function using eight coefficients that included two Watson-type Δ correction terms. Dunham Yij coefficients have been derived for each of the four isotopic species. The equilibrium internuclear distance re of BrCl is 2.136 053 28 (67) Å.

Rotational Spectrum and 14N-Quadrupole Coupling Constants of Orthofluorobenzonitrile, a Microwave Fouriertransform Study

1986 ◽  
Vol 41 (7) ◽  
pp. 955-958 ◽  
Author(s):  
Olaf Böttcher ◽  
Dieter H. Sutter
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Vibrational State ◽  
Coupling Constants ◽  
Spectroscopic Constants ◽  
Fourier Transform Spectrometer ◽  
Rotational Spectrum ◽  
Frequency Range ◽  
Rotational Constants ◽  
Quadrupole Coupling

Seventyseven a-type rotational transitions of Orthofluorobenzonitrile were observed and assigned in the 8 - 25 GHz frequency range. The spectrum was recorded using the high resolution microwave Fourier transform spectrometer constructed at Kiel University. For most transitions the l4N quadrupole hfs patterns could be fully resolved. The spectroscopic constants obtained by a fit to the observed hfs-center frequencies and to the observed hfs multiplet splittings are: A = 2940.745(12) MHz, B = 1512.699(1) MHz, C = 998.633(1) MHz (rotational constants) and Χaa = - 4.114( 17) MHz, Xbb - Xcc= 0.383(34) MHz (14N quadrupole coupling constants). The rotational spectrum of a low lying vibrational state could be also assigned.

The high-resolution Fourier transform infrared spectrum of isocyanogen, CNCN: rovibrational analysis of the ν1 and ν2 stretching band systems

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1251-1264 ◽  
Author(s):  
F. Stroh ◽  
M. Winnewisser ◽  
B. P. Winnewisser
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Infrared Spectrum ◽  
Gas Phase ◽  
Fourier Transform Infrared ◽  
Rotational Constant ◽  
Spectroscopic Constants ◽  
Linear Molecule ◽  
Effective Hamiltonian ◽  
Valence Force

The high-resolution gas phase Fourier transform infrared spectrum of the linear molecule isocyanogen, CNCN, has been measured in the 2000–2400 cm−1 region. The C≡N stretching band systems ν1 and ν2 located around 2302.0 and 2059.7 cm−1, respectively, were observed with an unapodized resolution of 0.003 cm−1. In the analysis of these band systems hot bands originating from the states with up to 3 quanta of ν5, the singly excited ν4, and the combination state (ν4 ν5) = (11) were assigned. Effective spectroscopic constants of the numerous subbands as well as constants of an effective Hamiltonian are presented. An analysis of rotation–vibration interaction in CNCN as well as a complete valence force field are presented. The equilibrium rotational constant Be of CNCN was found to be 5172.66 (18) MHz, the diagonal valence force constants determined for C=N–C≡N are for the Σ modes (in aJ/Å2): fC=N− = 15.1, f=N−C≡ = 8.3, f−C=N = 17.1, and for the Π modes (in aJ): fC=N−C≡ = 0.141, f=N−C≡N = 0.361.

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