ABSTRACT

Thermodynamic functions of complex formation of 15-crown-5 ether (15C5) with sodium cation (Na+) in the mixtures of propan-1-ol (PrOH) with water (W) at different temperatures have been calculated. To obtain this function two experimental methods have been used. The equilibrium constants of complex formation (15C5/Na+) have been determined by conductivity measurements and the enthalpic effect of complex formation has been measured by the calorimetric method and has been also calculated using van t Hoff s equation. The complexes are enthalpy stabilized but entropy destabilized. Effect of solvent properties on the process of complex 15C5/Na+ formation in PrOH +W mixtures has been discussed. The obtained results were compared with analogous data in the mixtures of water with methanol or ethanol and discussed.

Compounds

#	Formula	Name
1	C10H20O5	1,4,7,10,13-pentaoxacyclopentadecane
2	INa	sodium iodide
3	C3H8O	propan-1-ol
4	H2O	water

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	3	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Alternating current cell with electrodes	4
POMD	3 2 1	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid Solvent: Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	ISOPERIBOL	4
POMD	3 2 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Alternating current cell with electrodes	110
POMD	2 4 1	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid Solvent: Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	ISOPERIBOL	4
POMD	3 2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Alternating current cell with electrodes	4
POMD	4 3	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Alternating current cell with electrodes	36
POMD	3 2 4	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Solvent: Mole fraction - 4; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Alternating current cell with electrodes	36

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Effect of temperature and solvent properties on the process of complex formation between crown ether 15C5 and Na+ in the (propan-1-ol + water) mixture at temperatures from T = 293.15 K to T = 308.15 K

Jozwiak, M.[Malgorzata], Madej-Kielbik, L.[Longina], Wasiak, M.[Michal], Jozwiak, A.[Andrzej]

ABSTRACT