Conductivity and Viscosity of the Tetrabutylammonium Bromide – Carbon Tetrachloride System

1972 ◽  
Vol 50 (10) ◽  
pp. 1600-1603 ◽  
Author(s):  
K. F. Denning ◽  
James A. Plambeck
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Dependence ◽  
Tetrabutylammonium Bromide ◽  
Viscosity Measurements ◽  
Ratio Range

Conductivity and viscosity measurements have been made on tetra-n-butylammonium bromide – carbon tetrachloride solutions for the mole ratio range 1:40 to 1:2 at temperatures from 25 to 40 °C. At any individual concentration, both conductivity and viscosity follow an Arrhenius type temperature dependence. Viscosity increases exponentially with tetrabutylammonium bromide concentration while conductivity has a maximum at approximately 1:5 mole ratio R4NBr–CCl4.

Temperature dependence of proton magnetic resonance solvent shifts. 3,5-Dichlorosalicylaldehyde in carbon tetrachloride and benzene

1968 ◽  
Vol 46 (19) ◽  
pp. 3110-3112 ◽  
Author(s):  
G. Kotowycz ◽  
T. Schaefer
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Dependence ◽  
Proton Magnetic Resonance ◽  
Benzene Solution ◽  
Chemical Shifts ◽  
Relative Temperature ◽  
Proton Shift ◽  
Solvent Shifts ◽  
Solvent Molecules ◽  
Proton Chemical Shifts

The ring proton chemical shifts of 3,5-dichlorosalicylaldehyde as a function of temperature in carbon tetrachloride and benzene solutions indicate that if there is association with solvent molecules in benzene solution, then there is also association with carbon tetrachloride solvent molecules. The aldehydic proton shift shows a much smaller (relative) temperature dependence in the carbon tetrachloride solution.

scholarly journals Temperature Dependence of Viscosity and Density of cis-1,4/trans-1,3-Dimethylcyclohexane and Several other Commonly Used Organic Solvents

2003 ◽  
Vol 217 (6) ◽  
pp. 707-722 ◽  
Author(s):  
A. A. Ruth ◽  
H. Lesche ◽  
B. Nickel
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Organic Solvents ◽  
Temperature Regime ◽  
Dynamic Viscosity ◽  
Temperature Range ◽  
Viscosity Measurements ◽  
Glass Forming ◽  
Temperature Ranges

AbstractThe dynamic viscosity (η) of the glass-forming 50:50 mixture of cis-1,4/trans-1,3-dimethylcyclohexane (ct-DMCH) was measured from 293 K down to ≈ 126 K where η ~ 1.2 × 106 mPas. The viscosity measurements of several other commonly used solvents cover the range from 293 K down to ≈ 148 K (η ~ 1.4 × 104 mPas) for 1-propanol (1-Prop), to ≈118 K (η ~ 2.5 × 102 mPas) for 2-methylpentane (2-MP), to ≈ 167 K (η ~ 10.0 mPas) for isooctane (Isooct), to ≈ 183 K (η ~ 2.8 mPas) for cyclopentane (CP) and down to ≈ 98 K (η ~ 4.6 × 102 mPas) for the 30:70 mixture of cyclopentane/isopentane (CP/IP). The density (ρ) of all solvents was measured correspondingly over appropriate temperature ranges. For the solvents studied here, the temperature dependence of the viscosity can be represented by a single Arrhenius term down to ~180 K. Over a wider temperature range down to ~118K the sum of two Arrhenius terms is required, and in the low temperature regime a Vogel–Tammann–Fulcher expression is necessary to adequately describe the temperature dependence of the dynamic viscosity.

Temperature dependence of chemical shifts of protons in hydrogen bonds. Experimental evidence on an intramolecular hydrogen bond

1968 ◽  
Vol 46 (17) ◽  
pp. 2865-2868 ◽  
Author(s):  
T. Schaefer ◽  
G. Kotowycz
Keyword(s):  
Hydrogen Bond ◽  
Carbon Tetrachloride ◽  
Chemical Shift ◽  
Hydrogen Bonds ◽  
Temperature Dependence ◽  
Intramolecular Hydrogen Bond ◽  
Chemical Shifts ◽  
Hydroxyl Proton ◽  
Intramolecular Hydrogen ◽  
Strong Intramolecular Hydrogen Bond

A temperature dependence of the chemical shift of the hydroxyl proton in the strong intramolecular hydrogen bond in 3,5-dichlorosalicylaldehyde is observed in carbon tetrachloride and benzene-d6 solutions. Its magnitude of 0.25 to 0.30 × 10−2 p.p.m. per ° C over a range of 100 °C is in agreement with the model described by Muller and Reiter (1).

The temperature dependence of the liquid structure of carbon tetrachloride

1979 ◽  
Vol 64 (1) ◽  
pp. 154-157 ◽  
Author(s):  
Keiko Nishikawa ◽  
Kazuyuki Tohji ◽  
Mioko Shima ◽  
Yoshitada Murata
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Dependence ◽  
Liquid Structure

Temperature dependence of the infrared absorption cross sections of carbon tetrachloride

1992 ◽  
Vol 19 (10) ◽  
pp. 1005-1008 ◽  
Author(s):  
John J. Orlando ◽  
Geoffrey S. Tyndall ◽  
Alvin Huang ◽  
Jack G. Calvert
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Dependence ◽  
Cross Sections ◽  
Infrared Absorption ◽  
Absorption Cross

ENTHALPIES OF INTRAMOLECULAR HALOGEN–HYDROXYL INTERACTIONS

1965 ◽  
Vol 43 (3) ◽  
pp. 650-659 ◽  
Author(s):  
A. W. Baker ◽  
A. T. Shulgin
Keyword(s):  
Carbon Tetrachloride ◽  
Temperature Dependence ◽  
Kcal Mole

Enthalpies of halogen–hydroxyl interactions have been evaluated for the 2-halophenols in carbon tetrachloride. These values, in −kcal/mole, corrected for the temperature dependence of absorptivity coefficients, are Cl = 1.44, Br = 1.21, and I = 1.08. From enthalpy differences measured in unsymmetrical 2,6-dihalophenols, it is shown that the interaction in 2-fluorophenol lies between those in 2-bromophenol and 2-iodophenol, thus reaffirming the order Cl > Br > F > I.

Sign in / Sign up

Export Citation Format

Share Document