The high-resolution infrared spectrum of cyanobutadiyne, HC5N: The ν7 band centered at 642 cm

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1165-1178 ◽  
Author(s):  
Sybille Haas ◽  
Gisbert Winnewisser ◽  
Koichi M.T. Yamada

The ν7 infrared band of cyanobutadiyne (HC5N) was recorded for the first time with high resolution by FTIR spectroscopy using a sample produced by gas electric discharge. The fundamental band and the hot bands arising from the ν11 = and 2 states are identified. The molecular parameters, including the rotational and vibrational ℓ-type doubling constants, have been determined accurately by analyzing the spectra together with the available microwave and millimetre wave data. The intensity perturbation caused by the ℓ-type resonance in the (ν7,ν11) = (1,1) state has been clearly observed and discussed.


1981 ◽  
Vol 59 (10) ◽  
pp. 1313-1326 ◽  
Author(s):  
D. A. Steiner ◽  
S. R. Polo ◽  
T. K. McCubbin Jr. ◽  
K. A. Wishah

The ν1 fundamental band of DNCO has been observed for the first time under high resolution. The band origin for this deuterium–nitrogen stretching vibration is found to be at 2637.198 cm−1, rather distant from the previously reported value of 2634.9 cm−1. Eighteen subbands have been analyzed and term values for both ground and ν1 states with K up to 6 have been obtained. Effective rotational constants Bν and centrifugal distortion constants Dν and Hν have also been determined. Interaction is observed with the 2ν3 vibration which has a band origin around 2640 cm−1. Interesting perturbations are observed for the K = 0 and K = 4 levels of ν1.



1985 ◽  
Vol 50 (11) ◽  
pp. 2480-2492 ◽  
Author(s):  
Soňa Přádná ◽  
Dušan Papoušek ◽  
Jyrki Kauppinen ◽  
Sergei P. Belov ◽  
Andrei F. Krupnov ◽  
...  

Fourier transform spectra of the ν2 band of PH3 have been remeasured with 0.0045 cm-1 resolution. Ground state combination differences from these data have been fitted simultaneously with the microwave and submillimeterwave data to determine the ground state spectroscopical parameters of PH3 including the parameters of the Δk = ± 3n interactions. The correlation between the latter parameters has been discussed from the point of view of the existence of two equivalent effective rotational operators which are related by a unitary transformation. The ΔJ = 0, +1, ΔK = 0 (A1 ↔ A2, E ↔ E) rotational transitions in the ν2 and ν4 states have been measured for the first time by using a microwave spectrometer and a radiofrequency spectrometer with acoustic detection.



2000 ◽  
Vol 203 (2) ◽  
pp. 310-313 ◽  
Author(s):  
T.L. Tan ◽  
S.Y. Lau ◽  
P.P. Ong ◽  
K.L. Goh ◽  
H.H. Teo


2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
G. B. Lebron ◽  
T. L. Tan

The integrated band intensities of ethylene (12C2H4) in the 640–3260 cm−1 region were determined by Fourier transform infrared (FTIR) spectroscopy. The infrared absorbance spectra of the ν7 and ν10, ν12, ν7+ν8, ν6+ν10, v11, and ν9 and ν2+ν12 bands of ethylene recorded at a resolution of 0.5 cm−1 were measured at an ambient temperature of 296 K at various vapor pressures ranging from 3×10−5 to 1×10−3 atm to obtain respective Beer-Lambert's law plots. The measured integrated band intensities in cm−1/cm atm were S(ν9andν2+ν12)=112.20±0.24, S(ν11)=55.35±0.14, S(ν12)=41.22±0.30, and S(ν7andν10)=328.66±16.55. In addition, the measured infrared band intensities of the ν7+ν8 and ν6+ν10 combination bands of ethylene are reported for the first time: S(ν7+ν8)=21.701±0.028 cm−1/cm atm and S(ν6+ν10)=2.568±0.025 cm−1/cm atm.



1980 ◽  
Vol 83 (2) ◽  
pp. 373-390 ◽  
Author(s):  
Yoshiaki Hamada ◽  
Masamichi Tsuboi


2008 ◽  
Vol 251 (1-2) ◽  
pp. 123-128 ◽  
Author(s):  
A. Baldacci ◽  
P. Stoppa ◽  
S. Giorgianni ◽  
R. Wugt Larsen


1986 ◽  
Vol 117 (1) ◽  
pp. 46-59 ◽  
Author(s):  
J.J. Hillman ◽  
D.E. Jennings ◽  
W.B. Olson ◽  
Aaron Goldman






2013 ◽  
Vol 15 (25) ◽  
pp. 10141 ◽  
Author(s):  
O. Pirali ◽  
M. Goubet ◽  
T. R. Huet ◽  
R. Georges ◽  
P. Soulard ◽  
...  


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