Infrared and Raman Spectra of 1,2-Dichloroethane and its Deuterium Compound in the Gaseous, Liquid, and Solid States

1975 ◽  
Vol 53 (19) ◽  
pp. 2085-2094 ◽  
Author(s):  
S. Mizushima ◽  
T. Shimanouchi ◽  
I. Harada ◽  
Y. Abe ◽  
H. Takeuchi
Keyword(s):  
Internal Rotation ◽  
Raman Spectra ◽  
Mechanical Treatment ◽  
Quantum Mechanical ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Solid States ◽  
Quantum Mechanical Treatment ◽  
Wide Range ◽  
Free Molecules

The infrared and Raman spectra of 1,2-dichloroethane and its deuterium compound in the gaseous, liquid, and solid states have been remeasured in the wide range of wavelength by the experimental techniques developed recently. Normal coordinate treatments have been made for crystals as well as for free molecules by use of computer programs made by us, and all the vibrational frequencies observed for free molecules and crystals have been assigned satisfactorily. Our previous conclusions of the existence of the trans and gauche forms have been confirmed spectroscopically and, furthermore, supported theoretically by the quantum mechanical treatment of the internal rotation.

Spectra and Structure of Silicon-Containing Compounds. XII. Infrared and Raman Spectra of Trimethylvinylsilane and Trimethyl-D9-vinylsilane

1980 ◽  
Vol 34 (1) ◽  
pp. 60-65 ◽  
Author(s):  
J. R. Durig ◽  
W. J. Natter ◽  
M. Johnson-Streusand
Keyword(s):  
Internal Rotation ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Isotopic Substitution ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Infrared Band ◽  
Frequency Shifts ◽  
Solid States ◽  
Barriers To Internal Rotation

The Raman spectra (0 to 3300 cm−1) of (CH3)3Si(CHCH2) and (CD3)3Si(CHCH2) in the gaseous, liquid and solid states have been recorded. The infrared spectra (20 to 3300 cm−1) of the same two compounds in the gaseous and solid states have also been recorded. A vibrational assignment based upon depolarization ratios, frequency shifts with isotopic substitution, infrared band contours, and group frequencies is proposed. The SiC3 torsion was observed at 55 and 50 cm−1 for the “light” and “heavy” molecules, respectively, and the barriers to internal rotation were calculated to be 0.73 kcal/mol and 0.64 kcal/mol for the light and heavy compounds, respectively. These results are compared to the corresponding data for similar molecules.

Vibration spectra of sulphur tetranitride

1981 ◽  
Vol 46 (11) ◽  
pp. 2613-2619 ◽  
Author(s):  
Jiří Toužín
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Normal Coordinate Analysis ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Vibration Spectra

Available data on infrared and Raman spectra of S4N4 in solid state and solutions have been verified and completed. On the basis of normal coordinate analysis an attempt has been made to define with more precision the interpretation of vibration spectra of this compound given in earlier reports.

Vibrational spectra of aquadioxotetra; peroxodivanadates(V) M2[V2O2(O2)4(H2O)]·xH2O (M = N(CH3)4, Cs)

1990 ◽  
Vol 55 (6) ◽  
pp. 1485-1490 ◽  
Author(s):  
Peter Schwendt ◽  
Milan Sýkora
Keyword(s):  
Raman Spectra ◽  
Vibrational Spectra ◽  
Normal Coordinate Analysis ◽  
Force Constants ◽  
Infrared And Raman Spectra ◽  
Empirical Correlations ◽  
Normal Coordinate ◽  
Bond Lengths ◽  
Stretching Vibrations

The infrared and Raman spectra of M2[V2O2(O2)4(H2O)]·xH2O and M2[V2O2(O2)4(D2O)]·xD2O (M = N(CH3)4, Cs) were measured. In the region of the vanadium-oxygen stretching vibrations, the spectra were interpreted based on normal coordinate analysis, employing empirical correlations between the bond lengths and force constants.

scholarly journals IMPLICATIONS OF A QUANTUM MECHANICAL TREATMENT OF THE UNIVERSE

1998 ◽  
Vol 13 (05) ◽  
pp. 347-351 ◽  
Author(s):  
MURAT ÖZER
Keyword(s):  
Quantum Mechanics ◽  
Wave Packet ◽  
Early Universe ◽  
Mechanical Treatment ◽  
Correspondence Principle ◽  
Scale Factor ◽  
Quantum Mechanical ◽  
Quantum Mechanical Treatment ◽  
The Standard Model ◽  
The Universe

We attempt to treat the very early Universe according to quantum mechanics. Identifying the scale factor of the Universe with the width of the wave packet associated with it, we show that there cannot be an initial singularity and that the Universe expands. Invoking the correspondence principle, we obtain the scale factor of the Universe and demonstrate that the causality problem of the standard model is solved.

Sign in / Sign up

Export Citation Format

Share Document