ABSTRACT

Apparent molar volumes and standard partial molar volumes of LiClO4, LiBr and three symmetrical tetraalkylammonium bromides R4NBr (R=ethyl, propyl, butyl) have been determined at 298.15 K from precise density measurements in solvent mixtures of ethylene carbonate with tetrahydrofuran (THF), acetonitrile (AN), ethyl acetate (EA) and dimethoxyethane (DME). It is shown that the standard partial molar volume values of LiClO4 and LiBr are dependent strongly on the nature of the solvents, whereas the contribution of CH2 group to the partial molar volume of the tetraalkylammonium salts has nothing to do with the nature of the solvents and the composition of the solvent mixtures. This provided a helpful evidence for the unsolvation of large tetraalkylammonium cations in organic solvents. The results have been discussed from ion?solvent interactions and the dielectric e.ect of the solvents. 2004 Elsevier Ltd. All rights reserved.

Compounds

#	Formula	Name
1	C3H4O3	ethylene carbonate
2	C4H8O	tetrahydrofuran
3	ClLiO4	lithium perchlorate
4	BrLi	lithium bromide
5	C8H20BrN	tetraethylammonium bromide
6	C12H28BrN	tetrapropylammonium bromide
7	C16H36BrN	tetrabutylammonium bromide
8	C2H3N	acetonitrile
9	C4H8O2	ethyl acetate
10	C4H10O2	1,2-dimethoxyethane

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	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:4	1
POMD	8	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:4	1
POMD	9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:4	1
POMD	10	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	VIBTUB:UFactor:4	1
POMD	1 2	Mass density, kg/m3 ; Liquid		Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 2; Liquid	Liquid	Vibrating tube method	3
POMD	8 1	Mass density, kg/m3 ; Liquid		Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 8; Liquid	Liquid	Vibrating tube method	2
POMD	1 9	Mass density, kg/m3 ; Liquid		Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 9; Liquid	Liquid	Vibrating tube method	4
POMD	1 10	Mass density, kg/m3 ; Liquid		Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 10; Liquid	Liquid	Vibrating tube method	3
POMD	1 2 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 2; Liquid	Liquid	Vibrating tube method	7
POMD	1 2 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 2; Liquid	Liquid	Vibrating tube method	7
POMD	5 1 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 2; Liquid	Liquid	Vibrating tube method	7
POMD	1 2 6	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 2; Liquid	Liquid	Vibrating tube method	7
POMD	1 2 7	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 7; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 2; Liquid	Liquid	Vibrating tube method	7
POMD	8 1 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 8; Liquid	Liquid	Vibrating tube method	6
POMD	8 1 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 8; Liquid	Liquid	Vibrating tube method	7
POMD	5 8 1	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 8; Liquid	Liquid	Vibrating tube method	7
POMD	8 1 6	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 8; Liquid	Liquid	Vibrating tube method	7
POMD	8 1 7	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 7; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 8; Liquid	Liquid	Vibrating tube method	7
POMD	1 9 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 9; Liquid	Liquid	Vibrating tube method	7
POMD	1 9 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 9; Liquid	Liquid	Vibrating tube method	6
POMD	5 1 9	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 9; Liquid	Liquid	Vibrating tube method	5
POMD	1 9 6	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 9; Liquid	Liquid	Vibrating tube method	7
POMD	1 9 7	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 7; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 9; Liquid	Liquid	Vibrating tube method	7
POMD	1 10 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 10; Liquid	Liquid	Vibrating tube method	7
POMD	1 10 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 10; Liquid	Liquid	Vibrating tube method	6
POMD	5 1 10	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 10; Liquid	Liquid	Vibrating tube method	6
POMD	1 10 6	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 10; Liquid	Liquid	Vibrating tube method	7
POMD	1 10 7	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 7; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Solvent: Mole fraction - 10; Liquid	Liquid	Vibrating tube method	7

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Standard partial molar volumes of some electrolytes in ethylene carbonate based mixtures

Zhao, Y.[Yang], Wang, J.[Jianji], Lu, H.[Hui], Lin, R.[Ruisen]

ABSTRACT