THE INFRARED AND RAMAN SPECTRA OF DISULPHUR DECAFLUORIDE (S2F10)

1957 ◽  
Vol 35 (3) ◽  
pp. 191-201 ◽  
Author(s):  
J. K. Wilmshurst ◽  
H. J. Bernstein
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Potential Energy ◽  
Liquid Nitrogen ◽  
Potential Barrier ◽  
Energy Calculation ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Torsional Frequency ◽  
Simple Potential

The infrared spectrum of S2F10 has been obtained for the vapor from 5 to 35 μ and for the solid at liquid nitrogen temperatures from 10 to 24 μ. The Raman spectrum, together with depolarization ratios, was obtained for the liquid. A vibrational assignment has been made consistent with either D4d or D4h, symmetry and all the fundamentals identified except two low FSSF bending frequencies and the inactive torsional frequency. A normal co-ordinate calculation located the bending frequencies at 37 and 57 cm.−1 while a simple potential energy calculation gave a torsional frequency of 89 cm.−1 corresponding to a potential barrier of 2780 cm.−1.

The Infrared and Raman Spectra of Trifluoronitrosomethane

1974 ◽  
Vol 52 (18) ◽  
pp. 3149-3157 ◽  
Author(s):  
Herbert F. Shurvell ◽  
Shiv C. Dass ◽  
Robert D. Gordon
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Potential Energy ◽  
Internal Rotation ◽  
Condensed Phase ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Normal Coordinate ◽  
Energy Distributions ◽  
Torsional Mode

The infrared spectrum of gaseous CF3NO has been studied in the region 4000–35 cm−1. The infrared spectrum of the condensed phase has also been recorded and a complete vibrational assignment is proposed. Attempts to record the Raman spectrum have been hampered by photolysis. A frequency of 50 cm−1 for the CF3 torsional mode has been estimated from combination and hot bands. This corresponds to a barrier to internal rotation of approximately 425 cal/mol (150 cm−1). A normal coordinate analysis has been carried out and potential energy distributions, and valence and symmetry force constants are reported.

FAR INFRARED AND RAMAN SPECTRA AND STRUCTURE OF DITHIOPHOSGENE

1964 ◽  
Vol 42 (9) ◽  
pp. 2107-2112 ◽  
Author(s):  
W. K. Busfield ◽  
M. J. Taylor ◽  
E. Whalley
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Raman Spectra ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Tentative Assignment

The infrared spectrum in the range 3000–50 cm−1 and the Raman spectrum of solutions of dithiophosgene have been obtained. There are no coincidences in the infrared and Raman spectra, and the only structure consistent with this and approximately tetrahedral carbon valencies is[Formula: see text]that is tetrachloro-1,3-dithietane, in which the ring is planar or nearly planar. A tentative assignment of the observed bands is given on the basis of D2h symmetry.

Schwingungsspektren der Clusterverbindung Nb6F15/Vibrational Spectrum of the Cluster Compound Nb6F15

1989 ◽  
Vol 44 (1) ◽  
pp. 74-78 ◽  
Author(s):  
G. Kliche ◽  
H. G. von Schnering
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Vibrational Spectrum ◽  
Raman Spectra ◽  
Metal Cluster ◽  
Cluster Compound ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Valence Force

Abstract Infrared and Raman spectra of the metal cluster compound [Nb6F12]F3 (cubic Im3̄m; Z = 2) are reported. The three intense m odes observed in the Raman spectrum at 215. 267, and 337 cm-1 and a weak mode observed in the infrared spectrum at 287 cm-1 are assigned to the T2g, Eg, A1g, and T1u vibrational modes of the Nb6 octahedra. The assignment is supported by normal coordinate analysis and Raman measurements at 47 kbar. The valence force constants are f(Nb-Fi) = 2.04, f(Nb-Fa-a) = 1.30 and f(Nb-Nb) = 0.97 N cm-1 metal-to-metal interaction in the cluster.

INTERNAL ROTATION: VIII. THE INFRARED AND RAMAN SPECTRA OF FURFURAL

1955 ◽  
Vol 33 (6) ◽  
pp. 1055-1061 ◽  
Author(s):  
G. Allen ◽  
H. J. Bernstein
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Equilibrium Mixture ◽  
Stable Form ◽  
Infrared And Raman Spectra ◽  
Dilute Solution ◽  
Electric Moment ◽  
Temperature Range ◽  
Planar Configuration ◽  
Rotational Isomers

The Raman spectrum of furfural has been obtained photoelectrically in the liquid over a temperature range of 50° and in solution. The infrared spectrum has been obtained for the solid, the liquid (over a temperature range of 90°), and in dilute solution over a 50° temperature range. The vibrational spectrum is interpreted in terms of an equilibrium mixture of two rotational isomers with planar configuration. The isomer with higher electric moment is the more stable form in the liquid and in the solid.

Far Infrared and Raman Spectra of (CH3)3SiCo(CO)4

1971 ◽  
Vol 25 (2) ◽  
pp. 182-186 ◽  
Author(s):  
J. R. Durig ◽  
S. J. Meischen ◽  
S. E. Hannum ◽  
R. R. Hitch ◽  
S. K. Gondal ◽  
...  
Keyword(s):  
Raman Spectrum ◽  
Solid State ◽  
Raman Spectra ◽  
Normal Modes ◽  
Far Infrared ◽  
Static Field ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Degenerate Modes ◽  
Ir And Raman

The ir spectra of (CH3)3SiCo(CO)4 in the gaseous (4000–250 cm−1) and solid (4000–33 cm−1) phases have been recorded. The Raman spectrum has also been recorded for the solid state. To aid in the assignment, the ir and Raman spectra were recorded of solid (CH3)3SiH. The vibrational assignment for most of the 60 normal modes has been given on the basis of the fundamental vibrations of the –Si(CH3)3 and –Co(CO)4 moities. The static field was sufficiently strong to split the degenerate modes but the correlation field was so weak that no definite splitting of the symmetric modes was detected.

INFRARED AND RAMAN SPECTRA OF TETRABROMOETHYLENE

1953 ◽  
Vol 31 (12) ◽  
pp. 1223-1228 ◽  
Author(s):  
F. E. Malherbe ◽  
G. Allen ◽  
H. J. Bernstein
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Raman Spectra ◽  
Liquid State ◽  
Potential Functions ◽  
Infrared And Raman Spectra ◽  
Vibration Frequencies

The infrared spectrum of liquid and dissolved tetrabromoethylene has been investigated from 3µ–36µ. The Raman spectrum has been obtained photographically in the liquid state and photoelectrically in solution and depolarizations measured. All of the fundamentals were observed except v4, v7, v10, and v12. The last two vibration frequencies are estimated by calculations from two different potential functions.

Infrared and Raman spectra, vibrational assignment, and ab initio calculations of fluoromalononitrile

1997 ◽  
Vol 53 (12) ◽  
pp. 2001-2012 ◽  
Author(s):  
M. Dakkouri ◽  
A. Grunvogel-Hurst ◽  
Gamil A. Guirgis ◽  
Zhenhong Yu ◽  
Yanping Jin ◽  
...  
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Raman Spectra ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment
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