ABSTRACT

Precise measurements on electrical conductances of sodium tetraphenyl borate (NaPh4B) and tetrabutyl ammonium tetraphenyl borate (Bu4NPh4B) in different mass fraction (0.00 to 1.00) of nitromethane (CH3NO2) in nitrobenzene (PhNO2) at 298.15 K have been performed. Limiting molar conductances (K0), association constants (KA) and co-sphere diameter (R) for ion-pair formation in the mixed solvent systems have been evaluated using the Fuoss conductance-concentration equation. The FT-IR spectra for the solvents as well as the solute in solvent have also been studied. The results show more association of the ions in PhNO2 than CH3NO2 and results have been interpreted in terms of ion-solvent and solvent-solvent interaction.

Compounds

#	Formula	Name
1	C24H20BNa	sodium tetraphenylboron
2	C40H56BN	tetrabutylammonium tetraphenylborate(1-)
3	CH3NO2	nitromethane
4	C6H5NO2	nitrobenzene

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Capillary tube (Ostwald; Ubbelohde) method	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Capillary tube (Ostwald; Ubbelohde) method	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3 4	Viscosity, Pa*s ; Liquid	Mass fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	5
POMD	3 4	Refractive index (Na D-line) ; Liquid	Mass fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	5
POMD	3 4	Mass density, kg/m3 ; Liquid	Mass fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	4 1	Molar conductivity, S*m2/mol ; Liquid	Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	12
POMD	4 1	Refractive index (Na D-line) ; Liquid	Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	3 1	Molar conductivity, S*m2/mol ; Liquid	Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	12
POMD	3 1	Refractive index (Na D-line) ; Liquid	Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	4 2	Molar conductivity, S*m2/mol ; Liquid	Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	12
POMD	4 2	Refractive index (Na D-line) ; Liquid	Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	3 2	Molar conductivity, S*m2/mol ; Liquid	Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	12
POMD	3 2	Refractive index (Na D-line) ; Liquid	Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	3 4 1	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass fraction - 3; Liquid Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	60
POMD	3 4 1	Refractive index (Na D-line) ; Liquid	Solvent: Mass fraction - 3; Liquid Amount concentration (molarity), mol/dm3 - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30
POMD	3 4 2	Molar conductivity, S*m2/mol ; Liquid	Solvent: Mass fraction - 3; Liquid Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	60
POMD	3 4 2	Refractive index (Na D-line) ; Liquid	Solvent: Mass fraction - 3; Liquid Amount concentration (molarity), mol/dm3 - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Physico-chemical studies of sodium tetraphenylborate and tetrabutylammonium tetraphenylborate in pure nitrobenzene and nitromethane and their binaries probed by conductometry, refractometry and FT-IR spectroscopy

Dewan, R.[Rajani], Roy, M. N.[Mahendra Nath]

ABSTRACT