THE DIELECTRIC CONSTANTS OF BINARY MIXTURES. III THE ELECTRIC MOMENTS OF CERTAIN ORGANIC MOLECULES IN CARBON TETRACHLORIDE SOLUTION

1927 ◽  
Vol 49 (10) ◽  
pp. 2408-2416 ◽  
Author(s):  
Ignace J. Krchma ◽  
John Warren Williams
Keyword(s):  
Carbon Tetrachloride ◽  
Binary Mixtures ◽  
Organic Molecules ◽  
Dielectric Constants ◽  
Carbon Tetrachloride Solution

Studies on density, viscosity, dielectric constant, and refractive index of binary mixtures of esters in benzene and carbon tetrachloride

1988 ◽  
Vol 66 (1) ◽  
pp. 111-116 ◽  
Author(s):  
Shantilal Oswal
Keyword(s):  
Carbon Tetrachloride ◽  
Ethyl Acetate ◽  
Binary Mixtures ◽  
Molecular Interaction ◽  
Butyl Acetate ◽  
Molar Refraction ◽  
Dielectric Constants ◽  
Ethyl Butyrate ◽  
Propyl Acetate ◽  
Π Complex

Densities, viscosities, dielectric constants, and refractive indices have been determined for six binary mixtures of propyl acetate, butyl acetate, and ethyl butyrate in benzene and carbon tetrachloride at different mole fractions and temperatures. The excess volumes VE, apparent excess values of viscosity δη, excess Gibbs energy of activation of flow ΔG*E, excess molar polarizations [Formula: see text], excess molar refraction [Formula: see text], and excess dielectric constants εE have been calculated from the experimental data. The results for these binary mixtures are compared with those of ethyl acetate with benzene, carbon tetrachloride, and cyclohexane and of propyl acetate, butyl acetate, and ethyl butyrate with cyclohexane. The results for VE, ΔG*E, [Formula: see text], and εE indicate specific molecular interaction between unlike molecules in ester + benzene and ester + carbon tetrachloride. The specific molecular interaction for mixtures of esters with benzene may be due to n–π complex formation between the free electrons of carboxylic group and aromatic ring while with carbon tetrachloride it may be due to dipole – induced dipole interactions. The molar refractions for all six mixtures vary linearly with mole fraction of components. Comparison between experimental excess volume VE and excess viscosity Δ ln η and that calculated from Flory theory for ethyl acetate + benzene and ethyl acetate + carbon tetrachloride has also been made.

The Photo‐Chlorination of Methyl Chloroformate in Carbon Tetrachloride Solution

1949 ◽  
Vol 17 (6) ◽  
pp. 566-573 ◽  
Author(s):  
T. L. Batke ◽  
L. M. Dorfman ◽  
D. J. LeRoy
Keyword(s):  
Carbon Tetrachloride ◽  
Carbon Tetrachloride Solution

Synthesis of Silicon Carbide Films from Partially Oxidized Polyvinylsilane by Carbon Tetrachloride Solution Casting

2002 ◽  
Vol 17 (1) ◽  
pp. 214-223 ◽  
Author(s):  
Masaki Narisawa ◽  
Takeshi Hasegawa ◽  
Kiyohito Okamura ◽  
Masayoshi Itoh ◽  
Thomas Apple ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Carbon Tetrachloride ◽  
Radical Polymerization ◽  
Air Flow ◽  
Spectroscopic Studies ◽  
Flow Time ◽  
Silica Layer ◽  
Solution Casting ◽  
Amorphous Films ◽  
Carbon Tetrachloride Solution

Polyvinylsilane (PVS), derived from vinylsilane by radical polymerization, was partially oxidized in hot carbon tetrachloride solution by flowing air. If the air flow time is adjusted, soft gel films can be formed in a Teflon dish by casting the PVS solution. After the PVS films were peeled from the substrates, they were pyrolyzed at various temperatures. Spectroscopic studies of the pyrolyzed films up to 1273 K suggested that carbosilane (Si–CH2–Si) structures are formed in the films at 473–673 K. The compositions of the amorphous films obtained at 1673 K were approximately SiC1.38O0.21 and SiC1.41O0.51, depending on the crosslinking conditions. The oxygen incorporated in the films was removed in the form of CO and SiO during further heating at 1673–1873 K. The compositions of the films were changed to approximately SiC1.25 and SiC1.26, respectively, at 2073 K. The films obtained at 1273 K did not show degradation during the oxidation at 1273–1673 K while a protective silica layer was formed on their surfaces.

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