High-Resolution Rotational Raman Spectra of Gases

1979 ◽  
pp. 71-121 ◽  
Author(s):  
A. Weber
Keyword(s):  
High Resolution ◽  
Raman Spectra

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: I. EXPERIMENTAL METHODS

1954 ◽  
Vol 32 (5) ◽  
pp. 330-338 ◽  
Author(s):  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Magnesium Oxide ◽  
Raman Spectra ◽  
Experimental Methods ◽  
Resolving Power ◽  
Polar Molecules ◽  
High Current ◽  
Rotational Constants ◽  
Moments Of Inertia

An apparatus for obtaining intense Raman spectra of gases excited by the Hg 4358 line is described. It consists of a mirror-type Raman tube irradiated by two high-current mercury lamps, completely enclosed in a reflector of magnesium oxide. The lamps are externally water-cooled along their entire length and emit sharp lines of high intensity.Rotational Raman spectra of gases at a pressure of 1 atm. have been photographed in the second order of a 21 ft. grating in exposure times of 6 to 24 hr. The Raman lines are sharp and a resolving power of about 100,000 has been achieved. It will be possible to resolve the rotational Raman spectra, and hence to evaluate the rotational constants of molecules having moments of inertia of up to 300 × 10−10 gm. cm.2 Such investigations will be especially useful for non-polar molecules.

scholarly journals High-Resolution Infrared and Raman Spectra of the Polycrystalline Sinomenine Hydrochloride

2016 ◽  
Vol 67 ◽  
pp. 03025
Author(s):  
Xiao-Dong Liu ◽  
Lu Liu ◽  
Sen Gao ◽  
Hua-Mao Meng ◽  
Wen Zhang
Keyword(s):  
High Resolution ◽  
Raman Spectra ◽  
Infrared And Raman Spectra ◽  
Sinomenine Hydrochloride

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: VIII. ROTATIONAL SPECTRA OF ACETYLENE, DIACETYLENE, DIACETYLENE-d2, AND DIMETHYLACETYLENE

1957 ◽  
Vol 35 (4) ◽  
pp. 373-382 ◽  
Author(s):  
J. H. Callomon ◽  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Raman Spectra ◽  
Rotational Constants ◽  
Related Molecule ◽  
Rotational Spectra ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

The pure rotational Raman spectra of acetylene (C2H2), diacetylene (C4H2 and C4D2), and dimethylacetylene (C4H6) have been photographed with a 21-ft. grating spectrograph. The rotational constants were found to be B0(C2H2) = 1.1769 cm−1, B0(C4H2) = 0.14689 cm−1, B0(C4D2) = 0.12767 cm−1, and B0(C4H6) = 0.1122 cm−1. An analysis shows that r0(C—H) in diacetylene is shorter than in acetylene and cyanoacetylene; in dimethylacetylene at least one of the carbon–carbon bonds is longer than in the closely related molecule methylacetylene.

High-resolution Raman spectra of the Fermi diad in disordered crystalline CO2

1995 ◽  
Vol 26 (8-9) ◽  
pp. 643-652 ◽  
Author(s):  
J. J. Andueza ◽  
R. Ouillon ◽  
J. P. Pinan Lucarre ◽  
P. Ranson
Keyword(s):  
High Resolution ◽  
Raman Spectra

Theoretical and experimental studies of high-resolution inverse Raman spectra of molecular nitrogen at 1-10 atm

1987 ◽  
Vol 91 (1) ◽  
pp. 41-46 ◽  
Author(s):  
M. L. Koszykowski ◽  
L. A. Rahn ◽  
R. E. Palmer ◽  
M. E. Coltrin
Keyword(s):  
High Resolution ◽  
Raman Spectra ◽  
Molecular Nitrogen ◽  
Experimental Studies

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).

Sign in / Sign up

Export Citation Format

Share Document