Modelling the OH stretch envelope shape and temperature effects in infrared spectra of hydrous silica and silicate glasses

2000 ◽  
Vol 27 (8) ◽  
pp. 590-597 ◽  
Author(s):  
D. P. Zarubin
Keyword(s):  
Infrared Spectra ◽  
Temperature Effects ◽  
Silicate Glasses ◽  
Hydrous Silica

Spectral Interpretation and Qualitative Analysis of Organophosphorus Pesticides Using FT-Raman and FT-Infrared Spectroscopy

1996 ◽  
Vol 50 (5) ◽  
pp. 565-571 ◽  
Author(s):  
Peter A. Tanner ◽  
Kim-Hung Leung
Keyword(s):  
Raman Spectroscopy ◽  
Infrared Spectroscopy ◽  
Infrared Spectra ◽  
Temperature Effects ◽  
Organophosphorus Pesticides ◽  
Spectral Interpretation ◽  
Ft Raman Spectroscopy ◽  
Safe Technique ◽  
Characteristic Group ◽  
Ft Raman

FT-Raman spectroscopy is a selective and safe technique for the qualitative identification of organophosphorus pesticides and is not accompanied by sample photodecomposition. Spectra of 14 target pesticides were recorded, and the phosphorus characteristic group frequencies are discussed. Preliminary investigations of solvent and temperature effects upon the infrared spectra were also carried out.

OH-related Infrared Absorption Spectra in Silicate Glasses

2011 ◽  
Vol 295-297 ◽  
pp. 1108-1112
Author(s):  
Xiao Qing Liu ◽  
Jun Lin Xie
Keyword(s):  
Fourier Transform ◽  
Infrared Spectra ◽  
Water Structure ◽  
Silicate Glasses ◽  
Ir Absorption ◽  
Atmospheric Conditions ◽  
Air Atmosphere ◽  
Melt Water ◽  
Infrared Absorption Spectra ◽  
Water Contents

To discover the water structure in glass, two silicate glasses were synthesized under different melting atmospheric conditions. Fourier transform infrared spectrometric analyzer was used to study the OH contents and the infrared spectra bands in 1300-4000cm-1of the glasses. The research shows that water contents of glass samples melted under air atmosphere and oxyfuel firing atmosphere are 0.0323wt% and 0.0512wt% respectively. The infrared absorptions in 1300-4000cm-1band are dominantly related with water dissolved in glass melt. Water existing in glass is mainly in the form of Si-OH, in addition with some free OH connected with metal cations. The IR absorption of ferrous ion in glass is near 3430cm-1, while the IR absorption near 2500 cm-1does not belong to the vibration of KOH.

THE INFRARED SPECTRA OF MALONATES AND OXALATES: TEMPERATURE EFFECT

1959 ◽  
Vol 37 (7) ◽  
pp. 1146-1152 ◽  
Author(s):  
R. A. Abramovitch
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Effect ◽  
Infrared Spectra ◽  
Temperature Effects ◽  
Liquid Films ◽  
Vibrational Coupling ◽  
Rotational Isomers ◽  
Acetonitrile Solutions ◽  
Definite Temperature

The infrared spectra of a number of malonates and oxalates (as liquid films) were examined at various temperatures and narrower slit widths than had previously been used. The absorption in the 5.8 μ region is very complex, at least four bands being observed in each case. Small but definite temperature effects were recorded for both types of esters. At somewhat wider slit widths only two bands were observed, these occasionally having indistinct shoulders. The spectra of some of the compounds were also measured in both carbon tetrachloride and acetonitrile solutions (two bands observed in each case) and the ratios of the intensities of the two bands compared. A possible explanation of the effects observed is that at least two rotational isomers can exist for each compound and that vibrational coupling of the carbonyl stretching frequencies can occur in each of the rotational isomers.

Infrared spectra of β-hydroquinone–xenon crystal. H/D isotope and temperature effects

2011 ◽  
Vol 55 (1) ◽  
pp. 107-114 ◽  
Author(s):  
M. Ilczyszyn ◽  
M. Selent ◽  
M.M. Ilczyszyn ◽  
J. Baran
Keyword(s):  
Infrared Spectra ◽  
Temperature Effects

scholarly journals Finite-Temperature Effects on the Stability and Infrared Spectra of HCl(H2O)6Clusters†

2007 ◽  
Vol 111 (49) ◽  
pp. 12810-12815 ◽  
Author(s):  
U. F. T. Ndongmouo ◽  
M.-S. Lee ◽  
R. Rousseau ◽  
F. Baletto ◽  
S. Scandolo
Keyword(s):  
Infrared Spectra ◽  
Finite Temperature ◽  
Temperature Effects ◽  
The Stability
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