Accurate intensity calibration for low wavenumber (−150 to 150 cm−1 ) Raman spectroscopy using the pure rotational spectrum of N2

2015 ◽  
Vol 46 (11) ◽  
pp. 1140-1144 ◽  
Author(s):  
Hajime Okajima ◽  
Hiro-o Hamaguchi
Keyword(s):  
Raman Spectroscopy ◽  
Rotational Spectrum ◽  
Intensity Calibration

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: III. RAMAN SPECTRUM OF NITROGEN

1954 ◽  
Vol 32 (10) ◽  
pp. 630-634 ◽  
Author(s):  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
High Resolution ◽  
Electronic Spectra ◽  
Second Order ◽  
Published Data ◽  
Rotational Spectrum ◽  
Rotational Constants ◽  
Vibrational Constants

The pure rotational spectrum and the Q branch of the 1–0 band of N2 were photographed in the second order of a 21 ft. grating. An analysis of the rotational spectrum yields the rotational constants[Formula: see text]The value of B0 together with the Bν values obtained from the electronic bands of N2 gives[Formula: see text]Revised values of the vibrational constants have also been calculated using the results of the present work and the published data on the electronic spectra.

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: XV. ROTATIONAL SPECTRUM AND MOLECULAR STRUCTURE OF CYCLOBUTANE

1962 ◽  
Vol 40 (6) ◽  
pp. 725-731 ◽  
Author(s):  
R. C. Lord ◽  
B. P. Stoicheff
Keyword(s):  
Molecular Structure ◽  
Raman Spectroscopy ◽  
High Resolution ◽  
Bond Length ◽  
Raman Spectra ◽  
Point Group ◽  
Rotational Spectrum ◽  
Rotational Constants ◽  
Group D

An investigation of the rotational Raman spectra of normal and fully deuterated cyclobutane (C4H8 and C4D8) has given values of the rotational constants for these molecules. From these results it was found that the C—C bond length is 1.558 ± 0.003 Å, irrespective of whether cyclobutane belongs to the molecular point group D4h (planar C4 ring) or D2d (puckered C4 ring).

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: X. ROTATIONAL SPECTRUM OF BUTATRIENE (H2C=C=C=CH2)

1957 ◽  
Vol 35 (8) ◽  
pp. 837-841 ◽  
Author(s):  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
High Resolution ◽  
Rotational Constant ◽  
Rotational Spectrum ◽  
A Value

The rotational Raman spectrum of butatriene (H2C=C=C=CH2) at a pressure of 2 cm. Hg was photographed with a 21 ft. grating spectrograph. An analysis of this spectrum (based on the symmetric top approximation) yields the rotational constant [Formula: see text](B0 + C0) = 0.13141 ± 0.0001 cm−1. If the two outer C=C bonds in butatriene are assumed to have the same length as the C=C bonds in allene,namely 1.309 Å, it is found that the central C=C bond has a length of 1.284 ± 0.006 Å, a value which is shorter than that of the C=C bonds in ethylene and in allene.

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: VI. ROTATIONAL SPECTRUM OF SYMMETRIC BENZENE-d3

1956 ◽  
Vol 34 (4) ◽  
pp. 350-353 ◽  
Author(s):  
A. Langseth ◽  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
High Resolution ◽  
Rotational Constant ◽  
Benzene Molecule ◽  
Second Order ◽  
Rotational Spectrum ◽  
Internuclear Distances

The pure rotational Raman spectrum of C6H3D3 vapor at a pressure of 15 cm. Hg was photographed in the second order of a 21 ft. grating. The value of the rotational constant was found to be B0 = 0.17165 ± 0.0001 cm−1. This result confirms the earlier spectroscopic values of the internuclear distances in the benzene molecule.

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: XI. SPECTRA OF CS2 AND CO2

1958 ◽  
Vol 36 (2) ◽  
pp. 218-230 ◽  
Author(s):  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Raman Spectra ◽  
Rotational Structure ◽  
Rotational Spectrum ◽  
Vibrational Constants ◽  
Infrared Data

The vibrational Raman spectra of CS2, C12O2, and C13O2, consisting of the strong Fermi diad ν1, 2ν2 have been photographed with a 21 ft. grating. In the spectrum of CS2, 12 additional sharp Q branches were observed in the region of the diad; three are due to isotopic molecules and the remainder are "hot" bands. The rotational structure of the strong ν1 band was also obtained. These measurements together with infrared data are used to determine the vibrational constants ωi0 and xik of CS2. The pure rotational spectrum of CS2, with rotational lines up to J = 94, yields the constants B000 = 0.10910 ± 0.00005 cm−1, D000 = 1.0 × 10−8 cm−1, and r0(C=S) = 1.5545 ± 0.0003 Å. For C12O2, the rotational structure of the diad was analyzed and the results are in agreement with recent infrared data.

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