Thermodynamics of dimerization of lithium salts in 1,2-dimethoxyethane

Maaser, H. E.; Delsignore, M.; Newstein, M. C.; Petrucci, Sergio

doi:10.1021/j150665a060

Cited by 26 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(NaNCS)'), 2049Am-i' for (LiNCS);', and tentatively to triple ions (2074m 4 for sodium thiocyanate, 42086Am--or lithium thiocyanate). The maximum absorbances per unit length of cell are expressed as a function of concentrations by cubic polynomial functions -eAUltrasonic spectra for sodium thiocyanate solutions in THF in the frequenc range 0.5-400 MHz are described by the sum of two Debye relaxation functions The ultrasonic spectra for sodium thiocyanate in THF are interpreted as due to a two step process:…”

Section: Security Classification Of This Page(whan Data Saiteroamentioning

confidence: 91%

Infrared and ultrasonic spectra of sodium thiocyanate and lithium thiocyanate in tetrahydrofuran

Saar¹,

Petrucci²

1986

J. Phys. Chem.

View full text Add to dashboard Cite

Section: Security Classification Of This Page(whan Data Saiteroamentioning

confidence: 91%

Infrared and ultrasonic spectra of sodium thiocyanate and lithium thiocyanate in tetrahydrofuran

Saar¹,

Petrucci²

1986

J. Phys. Chem.

View full text Add to dashboard Cite

“…For details of calculation reference is made to the literature (1,64). With simple liquids the PowlesGlarum relation (65,66) 2E +E T may be used where g is the Kirkwood correlation factor; T5 often is correlated with dynamic viscosity uLz the generalized Stokes-Einstein-Debye equation (67) T5 f5t.C + T°( 16) where V is the molecular volume of the relaxing compound, f is a stick parameter depending on molecular shape, C is an experimental parameter coupling microscopic and macroscopic viscosity, and T5° is the experimentally determined intercept with the T'-axis (=O), sometimes referred to as the free rotor correlation time. A relationship of the type of eq.…”

Section: = (T5(o)/e0) (Ta + T_a_) (13c)mentioning

confidence: 99%

“…Electrolyte solutions relevant for lithium batteries were investigated by Lestrade t a1. (13,48), and Petrucci t ct. (15)(16)(17)(18)(19)(20)(21).…”

Section: = (T5(o)/e0) (Ta + T_a_) (13c)mentioning

confidence: 99%

See 1 more Smart Citation

Dielectric properties of nonaqueous electrolyte solutions

Barthel¹,

Buchner²

1986

Pure and Applied Chemistry

View full text Add to dashboard Cite

-High frequency permittivity of non-aqueous electrolyte solutions and their solvents is discussed in the framework of time domain and frequency domain methods. Evaluation of data is performed on the basis of models presupposing one or more relaxation processes. Depression of the solvent permittivity, relaxation times of the solvent molecules, and dispersion amplitudes and relaxation times of ion-pair relaxation are investigated with regard to actual theories underlying these phenomena. Information is obtained on structural and dynamical properties of classes of electrolyte solutions based on rotic H-bonding, dipolar aprotic, and low permittivity solvents and mixtures of solvents.

show abstract

“…We next consider the dielectric results for NaSCN in TeG at 25 "C. Figure 11A 1 + (f/fiI)(l-n) sin (ar/2) 1 + 2(f/fi1)l-n sin (ar/2) + (f/fII)2(1-n) (18) (em1c-2) o-/fil)('-') cos bT/2) 1 + 2(f/fiI)(l-4 sin ( m / 2 ) + (f/fII)z(l-u) (19) where CY is the coefficient of the distribution parameter (1a) of the C o l d o l e functionzs with 0 < CY < 1, e, , is the static permittivity of the solution, and fi and fit are the relaxation frequencies of the two processes of amplitude (Q -emI) and (eml -em2), respectively. In the above S = k16 + k-I + kz + k-2 P klB(k2 + k-2) + k-lk-2 (17) also given 6 = 2Cp = 2a& = 2dCo/dKp with Kp = (1 -aJ/q2Co = 1 /q2Co for Kp >> 1, and neglecting activity coeficients.…”

Section: Results Calculations and Discussionmentioning

confidence: 99%

Thermodynamics of dimerization of sodium thiocyanate in some acyclic polyethers studied by infrared spectroscopy

Firman¹,

Xu²,

Eyring³

et al. 1992

J. Phys. Chem.

View full text Add to dashboard Cite

8631and the only candidate whose use is questionable, based upon this requirement, is the 16sHo-2,4,-hexanedionate complex.It was concluded that the solvent evaporation technique would be the most usefd method to produce nonporous retentive polyester spheres. Since an organic solvent such as chloroform is able to dissolve the polyesters, it is imperative that the Ln complex have adequate solubility in chloroform in order to be encapsulated in suitable amounts in the spheres. It is apparent that the CHC13 solubility of the ' 6 5 H~ complexes with acetylacetone and ethyl acetoacetate are sufficient for their intention. Although ethyl acetoacetate complexes Ho3+, its higher pK, allows a competing hydrolysis mechanism to occur which greatly reduces the maximum percent 1 6 5 H~ complexed. From these Observations, it is apparent that acetylacetone is the most effective complexing agent for 1 6 5 H~ for subsequent incorporation of the complex into PLA microspheres. Acknowledgment.Infrared spectra ("CN stretch") of the thiocyanate ion of NaSCN in the solvents tetrahydrofuran (THF) and 1,2-dimethoxyethane (DME) are attributed to contact ion pairs in equilibrium with dimer ion pairs (or quadrupoles). The thermodynamic dimerization constant Kdo is obtained from the spectral envelopes in two ways: (1) An apparent dimerization constant Kdapp (ignoring solvent-separated dimers) is calculated, and Kdo is obtained through extrapolation to zero electrolyte concentration, with activity coefficients yp = (&aw/Kdo)l/z calculated by theoretical equations expressing dipole-dipole interactions using a single adjustable parameter d, the dipole-dipole minimum approach distance. (2) A two-step Eigen dimerization scheme is also proposed, and Kdo = Kl( 1 + K2) is calculated from spectroscopically determined KI and K2 values, achieving fair agreement

show abstract

Thermodynamics of dimerization of lithium salts in 1,2-dimethoxyethane

Cited by 26 publications

References 0 publications

Infrared and ultrasonic spectra of sodium thiocyanate and lithium thiocyanate in tetrahydrofuran

Infrared and ultrasonic spectra of sodium thiocyanate and lithium thiocyanate in tetrahydrofuran

Dielectric properties of nonaqueous electrolyte solutions

Thermodynamics of dimerization of sodium thiocyanate in some acyclic polyethers studied by infrared spectroscopy

Contact Info

Product

Resources

About