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.

Notizen: Schwingungseigenschaften und thermodynamische Funktionen von Mn2O7

1987 ◽  
Vol 42 (3) ◽  
pp. 307-309 ◽  
Author(s):  
Enrique J. Baran
Keyword(s):  
Thermodynamic Functions ◽  
Related Species ◽  
Molecular Model ◽  
Force Constants ◽  
Vibrational Properties ◽  
Mean Amplitudes Of Vibration ◽  
Infrared Data

Vibrational Properties and Thermodynamic Functions of Mn2O7The main force constants for Mn2O7 have been calculated from recently reported infrared data, using a simplified molecular model. Mean amplitudes of vibration and thermodynamic functions are also reported. The results are briefly discussed and some comparisons with related species are made.

Acetyl Cyanide III. Vibrational Spectrum and Vibrational Analysis

1976 ◽  
Vol 31 (11) ◽  
pp. 1408-1412 ◽  
Author(s):  
H. M. Heise ◽  
F. Scappini ◽  
H. Dreizler
Keyword(s):  
Raman Spectrum ◽  
Liquid Phase ◽  
Infrared Spectrum ◽  
Vibrational Spectrum ◽  
Vibrational Analysis ◽  
Normal Coordinate Analysis ◽  
Normal Coordinate ◽  
Infrared Band

Abstract The infrared spectrum of gaseous acetyl cyanide, CH3COCN, has been recorded from 90 - 3200 cm-1. The Raman spectrum of the liquid phase has been measured between 100 and 500 cm-1. The eighteen fundamental vibrations have been assigned, mainly on the basis of the infrared band contours, and a normal coordinate analysis has been made.

Infrared Spectrum, Force Constants, and Thermodynamic Functions of SiF2

1967 ◽  
Vol 47 (12) ◽  
pp. 5031-5037 ◽  
Author(s):  
V. M. Khanna ◽  
R. Hauge ◽  
R. F. Curl ◽  
J. L. Margrave
Keyword(s):  
Infrared Spectrum ◽  
Thermodynamic Functions ◽  
Force Constants

Vibrational Analysis of Terephthalate and Terephthalate-D4 Ions

1987 ◽  
Vol 41 (3) ◽  
pp. 463-467 ◽  
Author(s):  
F. J. Boerio ◽  
P. G. Roth
Keyword(s):  
Perturbation Technique ◽  
Vibrational Analysis ◽  
Force Constants ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
First Order ◽  
Aromatic Esters ◽  
Carboxylate Groups ◽  
Benzene Rings ◽  
First Order Perturbation

Infrared and Raman spectra of the terephthalate and terephthalate-d4 ions have been obtained. Normal coordinate analysis was carried out for both ions by transferring force fields from previous work on aromatic esters and p-nitro-benzoate and then refining all the force constants for the carboxylate groups and the diagonal force constants for the benzene rings by a first-order perturbation technique. An interpretation of the observed spectra has been proposed and selected eigenvectors have been presented.

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.

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