Densities, speeds of sound, and refractive indices of the ternary mixtures (toluene+methyl acetate+butyl acetate) and (toluene+methyl acetate+methyl heptanoate) at 298.15K

2007 ◽  
Vol 39 (2) ◽  
pp. 218-224 ◽  
Author(s):  
Alejandra Mariano ◽  
Miguel Postigo ◽  
Diego González-Salgado ◽  
Luis Romaní
Keyword(s):  
Methyl Acetate ◽  
Butyl Acetate ◽  
Ternary Mixtures ◽  
Refractive Indices ◽  
Speeds Of Sound ◽  
Acetate Methyl ◽  
Methyl Heptanoate

scholarly journals Study of Refractive Indices and Its Theories for Mixtures of N, N-Diethylethanamine and Acetates

2020 ◽  
Vol 12 (3) ◽  
pp. 363-370
Author(s):  
P. Tyagi ◽  
K. Kumar ◽  
M. Rani ◽  
N. Sabharwal
Keyword(s):  
Experimental Data ◽  
Methyl Acetate ◽  
Butyl Acetate ◽  
Composition Range ◽  
Polynomial Equation ◽  
Carbon Chain ◽  
Refractive Indices ◽  
Carbon Chain Length ◽  
Propyl Acetate ◽  
Empirical Correlations

This paper reports the refractive indices ( ) of N,N-diethylethanamine + methyl acetate, ethyl acetate, propyl acetate, butyl acetate and pentyl acetate at 298.15 K and at different composition range. The various empirical correlations like Arago-Biot (AB), Gladstone-Dale (GD), Lorentz-Lorenz (L-L) Heller (H), Weiner (W), Newton (Nw) and Erying-John (E-J) were applied to experimental data for estimating theoretical value of refractive indices. For an equimolar mixture, the predicted deviation in refractive index values is consistent well with the experimental data. It has been found that the interactions between amine and different esters decrease when carbon chain length in ester increases. Also refractive indices are affected with change in temperature. To evaluate the standard deviation, RK polynomial equation was fitted to the measured refractive indices data.

C=O Stretching vibrations in Raman and infrared spectra of simple esters

1982 ◽  
Vol 47 (8) ◽  
pp. 2027-2036 ◽  
Author(s):  
Jiří Dybal ◽  
Jan Štokr ◽  
Bohdan Schneider
Keyword(s):  
Infrared Spectra ◽  
Methyl Acetate ◽  
Butyl Acetate ◽  
Dielectric Constants ◽  
Fermi Resonance ◽  
Conformational Structure ◽  
Infrared And Raman Spectra ◽  
Tert Butyl ◽  
Acetate Methyl ◽  
Stretching Vibrations

Infrared and Raman spectra of methyl acetate, tert-butyl acetate, methyl pivalate and tert-butyl pivalate were measured in the liquid and crystalline states and solutions of different dielectric constants. In these molecules, the bands of the C=O str. vibrations are not affected by conformational structure. The shape and position of the band of the C=O str. vibration in methyl acetate are primarily determined by intermolecular order created by interactions of the permanent dipoles of the molecules. In methyl pivalate and in tert-butyl acetate, the shape of the carbonyl band is mainly determined by Fermi resonance.

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