ABSTRACT

Resorcinarenes are macrocyclic compounds that form supramolecular complexes with a wide range of applications. In this paper, mutual diffusion coefficients and molar ionic conductivities are reported for aqueous solutions of the sodium salts of sulfonated resorcinarenes with two different alkyl groups: sodium C-tetraethyl-resorcin[4]arene sulfonate (Na4ETRA) and sodium C-tetrapropyl-resorcin[4]arene sulfonate (Na4PRRA). The diffusion coefficients and conductivities were measured at 25 .deg.C for dilute solutions of the resorcinarenes (concentration less than 0.010 mol*dm-3). The concentration dependence of the conductivities is accurately represented by equations for solutions of strong electrolytes, suggesting that association of the ETRA4- and PRRA4- ions with the Na+ counterions is negligible at the concentrations that were used. Furthermore, the limiting mobilities of the ETRA4- and PRRA4- ions derived independently from the diffusion and conductivity measurements are in good agreement. The change in the hydrodynamic radius of sulfonated resorcinarene caused by increasing the length of alky substituents is discussed.

Compounds

#	Formula	Name
1	H2O	water
2	C40H44Na4O20S4	tetrasodium 5,11,17,23-tetrakissulfonatemethylen-2,8,14,20-tetra(ethyl)resorcin[4]arene
3	C44H52Na4O20S4	tetrasodium 5,11,17,23-tetrakissulfonatemethylen-2,8,14,20-tetra(propyl)resorcin[4]arene

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	1 2	Electrical conductivity, S/m ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	12
POMD	1 2	Binary diffusion coefficient, m2/s ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Taylor dispersion method	6
POMD	1 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	12
POMD	1 3	Electrical conductivity, S/m ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	12
POMD	1 3	Binary diffusion coefficient, m2/s ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Taylor dispersion method	5
POMD	1 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	12

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Ionic conductivities and diffusion coefficients of alkyl substituted sulfonated resorcinarenes in aqueous solutions

Galindres, Diana M., Ribeiro, Ana C.F., Valente, Artur J.M., Esteso, Miguel A., Sanabria, Edilma, Vargas, Edgar F., Verissimo, Luis M.P., Leaist, Derek G.

ABSTRACT