Infrared spectra of liquid hydrogen and deuterium

1994 ◽  
Vol 72 (1-2) ◽  
pp. 51-56 ◽  
Author(s):  
A. R. W. McKellar ◽  
M. J. Clouter
Keyword(s):  
High Resolution ◽  
Detailed Analysis ◽  
Infrared Spectra ◽  
Liquid Hydrogen ◽  
Theoretical Interest ◽  
Induced Absorption ◽  
Vibrational Bands

Precise high-resolution spectra of liquid H2 and D2 in the regions of their fundamental vibrational bands (4000–5000 and 2900–3600 cm−1, respectively) are reported for various temperatures in the range 18–30 K. In hydrogen, concentrations for the.J = 0 para-H2 species of 25% (normal H2), 95%, and 99% were studied. In deuterium, normal D2, with 67% in the, J = 0 ortho state, was studied. These are the first published spectra of liquid D2. A detailed analysis of these results is not possible within present theories of collision-induced absorption, but it is hoped that their publication will stimulate theoretical interest.

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: IX. SPECTRA OF H2, HD, AND D2

1957 ◽  
Vol 35 (6) ◽  
pp. 730-741 ◽  
Author(s):  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Power Series ◽  
Infrared Spectra ◽  
Ground State ◽  
Power Series Expansion ◽  
Experimental Accuracy ◽  
Vibrational Bands ◽  
Complete Set ◽  
Electronic Ground

The pure rotational lines and the Q branch lines of the 1–0 vibrational bands of H2, HD, and D2 have been photographed with a 21 ft. grating spectrograph. From these spectra, a complete set of constants for the ν = 0 and 1 levels of all three molecules have been determined. When these constants are combined with Herzberg's results of the forbidden infrared spectra of H2 and HD they lead to improved values of the electronic ground state constants of H2 and HD. The leading terms in the Dunham power series expansion of the potential are calculated for H2 and HD and are found to be mutually consistent. The isotopic relations are obeyed within experimental accuracy, and the small constants De, Be, and He, are in agreement with values given by theoretical formulae.

High-Resolution Infrared Spectra of the ν1 Fundamental Bands of Mono-Substituted 13C Propyne Isotopologues

2018 ◽  
Vol 122 (2) ◽  
pp. 582-589 ◽  
Author(s):  
Kirstin D. Doney ◽  
Dongfeng Zhao ◽  
Harold Linnartz
Keyword(s):  
High Resolution ◽  
Infrared Spectra

High resolution infrared spectra of water vapor

1969 ◽  
Vol 29 (1-3) ◽  
pp. 312-347 ◽  
Author(s):  
Phillip E. Fraley ◽  
K. Narahari Rao ◽  
L.H. Jones
Keyword(s):  
Water Vapor ◽  
High Resolution ◽  
Infrared Spectra

Radiofrequency, Microwave, Submillimeter-Wave, and High-Resolution Infrared Spectra of thev6= 1 Vibrational State of CDF3

1997 ◽  
Vol 182 (1) ◽  
pp. 34-49 ◽  
Author(s):  
H. Bürger ◽  
J. Cosléou ◽  
J. Demaison ◽  
C. Gerke ◽  
H. Harder ◽  
...  
Keyword(s):  
High Resolution ◽  
Infrared Spectra ◽  
Vibrational State ◽  
Submillimeter Wave

Erratum: High resolution infrared spectra of the ν2 and 2ν1 bands of 14N16O2

1976 ◽  
Vol 54 (10) ◽  
pp. 1087-1087
Author(s):  
Aldée Cabana ◽  
Michel Laurin ◽  
Walter J. Lafferty ◽  
Robert L. Sams
Keyword(s):  
High Resolution ◽  
Infrared Spectra

A Raman and infrared spectroscopic study of triethylenediamine (DABCO) and its protonated forms

1988 ◽  
Vol 66 (5) ◽  
pp. 1249-1257 ◽  
Author(s):  
David A. Guzonas ◽  
Donald E. Irish
Keyword(s):  
Raman Spectrum ◽  
Spectroscopic Study ◽  
Infrared Spectra ◽  
Infrared Spectroscopic Study ◽  
Protonated Forms ◽  
Infrared Spectroscopic ◽  
Vibrational Bands

The Raman and infrared spectra of DABCO have been measured as a function of the pH, and the vibrational bands of the two protonated forms of DABCO have been tabulated and assigned. The frequencies of several of the Raman bands were found to exhibit substantial shifts upon protonation, and the appearance of the Raman spectrum in the region between 900 and 1100 cm−1 in particular shows differences which can be used to differentiate between the three forms of DABCO. The values of the two pKa's were determined from the intensity versus pH plots for the three species.

High Resolution Infrared Spectra of the ν2 and 2ν1 Bands of 14N16O2

1975 ◽  
Vol 53 (19) ◽  
pp. 1902-1926 ◽  
Author(s):  
Aldée Cabana ◽  
Michel Laurin ◽  
Walter J. Lafferty ◽  
Robert L. Sams
Keyword(s):  
High Resolution ◽  
Infrared Spectra ◽  
Ground State ◽  
Equilibrium Structure ◽  
Coriolis Interaction ◽  
Rotational Constants ◽  
Average Structures

The infrared spectra of two B type bands, ν2 and 2ν1, of 14N16O2 have been recorded under high resolution. Ground state combination differences from these bands have been combined with combination differences obtained in previous studies and eight pure rotational microwave transitions to yield improved ground state rotational constants. Upper state constants and band centers for the ν2 and 2ν1 bands are also reported. The 2ν1 band contains internal intensity anomalies believed to arise from a weak Coriolis interaction with the much stronger ν1 + ν3 band. Equilibrium rotational constants have been calculated. The equilibrium structure of the molecule is: rc = 1.1945 ± 0.0005 Å and Θc = 133.85 ± 0.10°. For the sake of comparison, effective, substitution, and average structures are also reported.

High-resolution infrared spectra of jet-cooled allyl radical (CH2–CH–CH2): ν2, ν3, and ν14 C–H stretch vibrations

2002 ◽  
Vol 116 (15) ◽  
pp. 6505-6512 ◽  
Author(s):  
Jia-xiang Han ◽  
Yu. G. Utkin ◽  
Hong-bing Chen ◽  
Neil T. Hunt ◽  
R. F. Curl
Keyword(s):  
High Resolution ◽  
Infrared Spectra ◽  
Allyl Radical
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