Conductance of tetraalkylammonium halides in ethylene glycol

DeSieno, Robert P.; Greco, Paul W.; Mamajek, Ronald C.

doi:10.1021/j100906a014

Cited by 12 publications

(11 citation statements)

References 2 publications

(2 reference statements)

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“…17 These were earlier discussed in the introduction. There are also reports where the deviation from reciprocal dependence between self-diffusivity of the solute and 55 whereas for water(H 2 O) and ethylene glycol (EG) from Ueno et al 44 and Sieno et al, 51 respectively. All λ 0 values of Li + and Cl − in the above solvents except in water, acetonitrile, methanol, and EG are taken from the Krumgalz.…”

Section: Resultsmentioning

confidence: 99%

“…Plot of limiting ion conductivity (λ 0 ) versus viscosity for (a) Li + and (b) and Cl – ion in different solvents at 25 °C. The viscosity data of acetone, acetonitrile (AN), methanol (MeOH), nitromethane (NM), dimethylformamide (DMF), pyridine (Pyd), dimethylacetamide (DMA), ethanol (EtOH), N -methylformamide (NMF), dimethylsulfoxide (DMSO), propylene carbonate (PC), and formamide (FA) are taken from Krumgalz whereas for water(H 2 O) and ethylene glycol (EG) from Ueno et al and Sieno et al, respectively. All λ 0 values of Li + and Cl – in the above solvents except in water, acetonitrile, methanol, and EG are taken from the Krumgalz .…”

Section: Resultsmentioning

confidence: 99%

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Relation Between the Diffusivity, Viscosity, and Ionic Radius of LiCl in Water, Methanol, and Ethylene Glycol: A Molecular Dynamics Simulation

2013

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A molecular dynamics (MD) investigation of LiCl in water, methanol, and ethylene glycol (EG) at 298 K is reported. Several structural and dynamical properties of the ions as well as the solvent such as self-diffusivity, radial distribution functions, void and neck distributions, velocity autocorrelation functions, and mean residence times of solvent in the first solvation shell have been computed. The results show that the reciprocal relationship between the self-diffusivity of the ions and the viscosity is valid in almost all solvents with the exception of water. From an analysis of radial distribution functions and coordination numbers the nature of hydrogen bonding within the solvent and its influence on the void and neck distribution becomes evident. It is seen that the solvent−solvent interaction is important in EG while solute−solvent interactions dominate in water and methanol. From Voronoi tessellation, it is seen that the voids and necks within methanol are larger as compared to those within water or EG. On the basis of the void and neck distributions obtained from MD simulations and literature experimental data of limiting ion conductivity for various ions of different sizes, we show that there is a relation between the void and neck radius on the one hand and dependence of conductivity on the ionic radius on the other. It is shown that the presence of large diameter voids and necks in methanol is responsible for maximum in limiting ion conductivity (λ0) of TMA+, while in water and EG, the maximum is seen for Rb+. In the case of monovalent anions, maximum in λ0 as a function ionic radius is seen for Br− in water and EG but for the larger ClO4 − ion in methanol. The relation between the void and neck distribution and the variation in λ0 with ionic radius arises via the Levitation effect which is discussed. These studies show the importance of the solvent structure and the associated void structure.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Relation Between the Diffusivity, Viscosity, and Ionic Radius of LiCl in Water, Methanol, and Ethylene Glycol: A Molecular Dynamics Simulation

2013

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“…It should be mentioned that the glycol in the later study26 possessed a viscosity 4% lower than that generally accepted; this affects the extrapolation slightly (as does the choice of a lower dielectric constant) and suggests that some water may have been introduced into the solvent from the ion-exchange column t^iat was employed. 25 Several other studies contain useful information. The conductances of four electrolytes over a range of glycol-water mixtures have been graphically reported26 and discussed,27 and Erdey-Grúz has kindly sent us28 the detailed results.…”

Section: Discussionmentioning

confidence: 99%

“…A Further Description of Complete Equilibrium Constants1 by William L. Marshall Reactor Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (Received November 25,1970) Publication costs assisted by the Oak Ridge National Laboratory, U. S. Atomic Energy Commission A complete equilibrium constant (K°), in which solvent species are included to reduce the number of parameters needed for describing solute ionization equilibria, is derived from a multistep solvation treatment of a conventional ionization constant (K). The previously assumed net change (k) in the number of solvent molecules in the reaction process is shown to have this mathematical form for both single and multiple solvent systems.…”

Section: Introductionmentioning

confidence: 99%

Transference numbers of potassium chloride and ionic conductances in ethylene glycol at 25.deg.

Santos¹,

Spiro²

1972

J. Phys. Chem.

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“…On the basis of the conventional transport theory, it has been suggested that the parameter To is the controlling variable in the composition dependence of transport at low temperatures. To reflects the cohesive forces in liquids, and in the case of charge unsymmetrical salt systems,28 the cohesive energy of one component (1) may be much less than that of the other (2). In other words Thd « Tq<2) and, therefore, one can presume a linear relation between T0 ami composition.…”

Section: Resultsmentioning

confidence: 99%