Acetonitrile N-oxide. Infrared spectrum and symmetry force constants

1967 ◽  
Vol 89 (25) ◽  
pp. 6442-6444 ◽  
Author(s):  
William G. Isner ◽  
George L. Humphrey
Keyword(s):  
Infrared Spectrum ◽  
Force Constants

Infrared spectrum, potential constants, and structure of thio-thionyl fluoride

1965 ◽  
Vol 18 (5) ◽  
pp. 627 ◽  
Author(s):  
RD Brown ◽  
GP Pez ◽  
MF O'Dwyer
Keyword(s):  
Electronic Structure ◽  
Infrared Spectrum ◽  
Thermodynamic Functions ◽  
Vibrational Analysis ◽  
Force Constants ◽  
Normal Coordinate ◽  
Infrared Data

An investigation of the infrared spectrum of gaseous thio-thionyl fluoride (SSF2) results in the following assignment of fundamentals: A': v1 760.5�0.2cm-1, v2 718.5�0.2 cm-1, v3 411.2�0.4cm-1, v4 364.1�0.3 cm-1. A": v5 692.3�0.8cm-1, v6 337.6�0.4 cm-1. A normal coordinate vibrational analysis has been performed and a set of ten force constants evaluated. Some conclusions are given regarding the electronic structure of SSF2. Thermodynamic functions based on the usual assumptions have been calculated for SSF2. A set of potential constants has been evaluated for disulphur monoxide, SSO, using the available infrared data.

Infrared spectrum and force constants of silyl-d3 iodide

1958 ◽  
Vol 12 (1) ◽  
pp. 41-46 ◽  
Author(s):  
H.R. Linton ◽  
E.R. Nixon
Keyword(s):  
Infrared Spectrum ◽  
Force Constants

Infrared spectrum and force constants of matrix-isolated nitrosyl iodide

1978 ◽  
Vol 34 (11) ◽  
pp. 1065-1066 ◽  
Author(s):  
M. Feuerhahn ◽  
W. Hilbig ◽  
R. Minkwitz ◽  
U. Engelhardt
Keyword(s):  
Infrared Spectrum ◽  
Force Constants

Das Infrarotspektrum von matrixisoliertem SFCl / Infrared Spectrum of Matrix Isolated SFCl

1984 ◽  
Vol 39 (3) ◽  
pp. 314-316 ◽  
Author(s):  
Helge Willner
Keyword(s):  
Infrared Spectrum ◽  
Gas Phase ◽  
Force Constants ◽  
Rare Gas ◽  
Isotopic Substitution ◽  
Uv Photolysis ◽  
Molecular Identity

The new compound SFCl was obtained by UV photolysis of FC(O)SCl in rare gas matrix and by UV photolysis of Cl2/SF3SF in the gas phase. Isotopic substitution verifies the molecular identity. Eight frequencies from three isotropic molecules determine the force constants fSF = 4.30 and fscl = 2.90 102N/m.

New Measurements of the Infrared Spectrum of H2S2 and D2S2 and Evaluation of the Molecular Force Field

1968 ◽  
Vol 23 (6) ◽  
pp. 832-839 ◽  
Author(s):  
Brenda P. Winnewisser ◽  
Manfred Winnewisser
Keyword(s):  
Infrared Spectrum ◽  
Force Field ◽  
Force Constants ◽  
Valence Force ◽  
Valence Force Field ◽  
Fundamental Frequencies ◽  
New Information ◽  
Molecular Force ◽  
Combination Bands ◽  
First Time

The infrared spectrum of H2S2 has been reviewed in the range 4000 to 250 cm-1 and the spectrum of D2S2 has been measured for the first time. No change in the basic assignment of the fundamental bands of H2S2 has been made, although the stretching fundamentals and the combination bands can be more precisely assigned on the basis of the new information.With the six fundamental frequencies of H2S2 and the two asymmetric fundamental frequencies of D2S2 , calculations were made to determine as fully as possible the general valence force field. It was found that only the diagonal force constants could be determined on the basis of the available data:FSH = 4.08 - 4.09 md/Å, Fa = 0.83 - 0.85 md A/rad2,FSS = 2.52 -2.62 md/Å, Ft = 0.0926 md Å/rad2.

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