The laser-raman spectrum and a normal-coordinate analysis of isotactic poly(tertiary butyl acrylate)

1981 ◽  
Vol 19 (12) ◽  
pp. 1805-1816 ◽  
Author(s):  
N. N. Aylward ◽  
S. S. Ti
Keyword(s):  
Raman Spectrum ◽  
Butyl Acrylate ◽  
Normal Coordinate Analysis ◽  
Normal Coordinate ◽  
Tertiary Butyl ◽  
Laser Raman

Vibrational spectroscopic studies and normal coordinate analyses of TiCl4 donor-acceptor complexes

1974 ◽  
Vol 27 (9) ◽  
pp. 1855 ◽  
Author(s):  
RP Cooney ◽  
DB Fraser
Keyword(s):  
Raman Spectrum ◽  
Spectral Data ◽  
Infrared Spectra ◽  
Spectroscopic Studies ◽  
Normal Coordinate ◽  
Laser Raman ◽  
Laser Raman Spectra ◽  
Donor Acceptor ◽  
Nitrogen Heteroatom ◽  
Octahedral Configuration

Laser Raman spectra and infrared spectra are reported for TiCl4,2MeCN, TiCl4,2PhCN, TiCl4,2py, TiBr4,2MeCN. For purposes of comparison the Raman spectrum of SnC14,2Ph3P has been recorded and assigned. Analysis of data indicates that a cis octahedral configuration is adopted by the TiC14,2L complexes and a trans configuration by SnCl4,2Ph3P. In addition a new complex, 3TiC14,4cpy, has been prepared and spectral data indicate the ligand bonds through its nitrogen heteroatom. Normal coordinate analyses and Urey-Bradley force constants are reported for TiC14,2MeCN and TiCl4,- 2PhCN.

Laser Raman Spectra and Normal Coordinate Analysis of Some Uranyl Tetrachloride Complexes

1980 ◽  
Vol 34 (3) ◽  
pp. 327-331 ◽  
Author(s):  
Ken Ohwada
Keyword(s):  
Raman Spectra ◽  
Point Group ◽  
Normal Coordinate Analysis ◽  
Force Constants ◽  
Normal Coordinate ◽  
Magic Formula ◽  
Vibrational Assignments ◽  
Laser Raman ◽  
Laser Raman Spectra ◽  
Group D

Laser Raman spectra of uranyl tetrachloride complexes [K2UO2Cl4, Rb2UO2Cl4, Cs2UO2Cl4, (NH4)2UO2Cl4] have been measured in the region from 3500 to 10 cm−1. Vibrational assignments as well as normal coordinate analyses have been carried out with the assumption that all the complexes contain discrete (UO2Cl4)2− ions belonging to a point group D4h. To understand the nature of the uranyl bonds in the complexes, approximate π-bonding energies of such bonds have been estimated from the U—O stretching force constants. The reliability of the values obtained are discussed in detail on the basis of Mulliken's magic formula.

Polarized Raman spectrum and normal coordinate analysis of α-MnMoO4

1988 ◽  
Vol 19 (3) ◽  
pp. 213-218 ◽  
Author(s):  
Isao Kanesaka ◽  
Hideto Hashiba ◽  
Ikuya Matsuura
Keyword(s):  
Raman Spectrum ◽  
Normal Coordinate Analysis ◽  
Normal Coordinate ◽  
Polarized Raman

Vibrational Spectra and Normal Coordinate Analysis of Disulfuryl Difluoride S2O5F2 and Diselenonyl Difluoride Se2O5F2

1993 ◽  
Vol 58 (3) ◽  
pp. 517-529 ◽  
Author(s):  
Jiří Toužín ◽  
Miloš Černík
Keyword(s):  
Raman Spectrum ◽  
Force Field ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Room Temperature ◽  
Normal Coordinate Analysis ◽  
Normal Coordinate ◽  
Valence Force Field ◽  
Overlapping Bands

Raman spectra (1 600 - 100 cm-1) of liquid S2O5F2 and Se2O5F2 and infrared spectra of liquid and gaseous S2O5F2 were measured. A modified general valence force field was used for their interpretation by normal coordinate analysis. Refinement of the number of lines in the Raman spectrum of S2O5F2 by means of numerical separation of the overlapping bands led to the conclusion that liquid S2O5F2 consists at least of three rotamers at room temperature.

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.

Vibrational spectra of ammonium ammine-oxo-diperoxovanadate

1982 ◽  
Vol 47 (6) ◽  
pp. 1549-1555 ◽  
Author(s):  
Peter Schwendt ◽  
Miloslav Pisárčik
Keyword(s):  
Raman Spectrum ◽  
Bond Length ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Normal Coordinate Analysis ◽  
Wave Number ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Mass Model ◽  
Vibrational Coupling

Infrared and Raman spectra of solid NH4[VO(O2)2NH3], ND4[VO(O2)2ND3], 14/15NH4[VO(O2)214/15NH3] (about 50% 15N) and Raman spectrum of solution of NH4[VO(O2)2NH3] have been measured. Interpretation of the spectra was complemented by normal coordinate analysis in the approximation of point mass model (NH3). The results have shown that there exists coupling of vibrations of two V(O2) groups, which enables an explanation of differences between spectra of the mono- and diperoxo complexes. The vibrational coupling of VO and OO bonds within one V(O2) group probably causes small sensitivity of wave number of v(O-O) band to changes of d(O-O) bond length.

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