ABSTRACT

Electrical conductances of tetraalkylammonium iodides, R4NI (R ) pentyl to heptyl) have been measured at 298.15 K in low-permittivity mixtures of 1,4-dioxane (a ) 2.21) and tetrahydrofuran (a ) 7.58). Minima in the conductometric curves (E versus c) were observed for electrolyte concentrations dependent upon both the electrolyte and the binary solvent mixture. The conductance data have been analyzed by the Fuoss-Kraus theory of triple ions. A numerical evaluation of ion-pair and triple-ion formation constants (KP and KT) was made, and the results have been discussed in terms of a molecular scale model.

Compounds

#	Formula	Name
1	C20H44IN	tetrapentylammonium iodide
2	C24H52IN	tetrahexylammonium iodide
3	C28H60IN	1-heptanaminmium, N,N,N-triheptyl-, iodide
4	C4H8O2	1,4-dioxane
5	C4H8O	tetrahydrofuran

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	5 4	Viscosity, Pa*s ; Liquid	Mass fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	5
POMD	5 4	Mass density, kg/m3 ; Liquid	Mass fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Pycnometric method	5
POMD	5 4 1	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass fraction - 4; Liquid Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	dip-type immersion cell	26
POMD	5 4 2	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass fraction - 4; Liquid Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	dip-type immersion cell	24
POMD	5 4 3	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass fraction - 4; Liquid Amount concentration (molarity), mol/dm3 - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	dip-type immersion cell	24

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Ion-Pair and Triple-Ion Formation by Some Tetraalkylammonium Iodides in Binary Mixtures of 1,4-Dioxane + Tetrahydrofuran

Roy, M. N.[Mahendra Nath], Pradhan, P.[Prasanna], Das, R. K.[Rajesh Kumar], Sinha, B.[Biswajit], Guha, P. K.[Prabir Kumar]

ABSTRACT