Thermodynamic properties of tetrabutylammonium iodide and tetrabutylammonium tetraphenylborate

N. N. Smirnova; L. Ya Tsvetkova; T. A. Bykova; V. A. Ruchenin; Yizhak Marcus

doi:10.1016/j.tca.2008.10.017

Thermodynamic properties of tetrabutylammonium iodide and tetrabutylammonium tetraphenylborate

N. N. Smirnova^*, L. Ya Tsvetkova, T. A. Bykova, V. A. Ruchenin, Yizhak Marcus

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The heat capacities of crystalline tetrabutylammonium iodide (TBAI) and tetrabutylammonium tetraphenylborate (TBATPhB) were determined over the temperature range 5-350 K by adiabatic vacuum calorimetry, generally with an uncertainty of ±0.2%. The experimental data were used to calculate the standard thermodynamic functions of TBAI and TBATPhB, namely, the heat capacity C _p^°(T), enthalpy H°(T) - H°(0), entropy S°(T) and Gibbs function G°(T) - H°(0) at p° = 0.1 MPa for the range from T → 0 to T = 350 K. The standard entropy of formation Δ_fS° TBAI and TBATPhB at T = 298.15 K was also determined. Thermodynamic characteristics of fusion and solid-state transition were determined by DSC, their comparison with literature data were carry out; numerical values of enthalpies and entropies of transitions were discussed in dependence of compounds composition.

Original language	English
Pages (from-to)	15-20
Number of pages	6
Journal	Thermochimica Acta
Volume	483
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tca.2008.10.017
State	Published - 10 Feb 2009

Keywords

Calorimetry
Fusion
Heat capacity
Tetrabutylammonium iodide
Tetrabutylammonium tetraphenylborate
Thermodynamic characteristics of fusion
Thermodynamic functions

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10.1016/j.tca.2008.10.017

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title = "Thermodynamic properties of tetrabutylammonium iodide and tetrabutylammonium tetraphenylborate",

abstract = "The heat capacities of crystalline tetrabutylammonium iodide (TBAI) and tetrabutylammonium tetraphenylborate (TBATPhB) were determined over the temperature range 5-350 K by adiabatic vacuum calorimetry, generally with an uncertainty of ±0.2\%. The experimental data were used to calculate the standard thermodynamic functions of TBAI and TBATPhB, namely, the heat capacity C p°(T), enthalpy H°(T) - H°(0), entropy S°(T) and Gibbs function G°(T) - H°(0) at p° = 0.1 MPa for the range from T → 0 to T = 350 K. The standard entropy of formation ΔfS° TBAI and TBATPhB at T = 298.15 K was also determined. Thermodynamic characteristics of fusion and solid-state transition were determined by DSC, their comparison with literature data were carry out; numerical values of enthalpies and entropies of transitions were discussed in dependence of compounds composition.",

keywords = "Calorimetry, Fusion, Heat capacity, Tetrabutylammonium iodide, Tetrabutylammonium tetraphenylborate, Thermodynamic characteristics of fusion, Thermodynamic functions",

author = "Smirnova, \{N. N.\} and Tsvetkova, \{L. Ya\} and Bykova, \{T. A.\} and Ruchenin, \{V. A.\} and Yizhak Marcus",

year = "2009",

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doi = "10.1016/j.tca.2008.10.017",

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T1 - Thermodynamic properties of tetrabutylammonium iodide and tetrabutylammonium tetraphenylborate

AU - Smirnova, N. N.

AU - Tsvetkova, L. Ya

AU - Bykova, T. A.

AU - Ruchenin, V. A.

AU - Marcus, Yizhak

PY - 2009/2/10

Y1 - 2009/2/10

N2 - The heat capacities of crystalline tetrabutylammonium iodide (TBAI) and tetrabutylammonium tetraphenylborate (TBATPhB) were determined over the temperature range 5-350 K by adiabatic vacuum calorimetry, generally with an uncertainty of ±0.2%. The experimental data were used to calculate the standard thermodynamic functions of TBAI and TBATPhB, namely, the heat capacity C p°(T), enthalpy H°(T) - H°(0), entropy S°(T) and Gibbs function G°(T) - H°(0) at p° = 0.1 MPa for the range from T → 0 to T = 350 K. The standard entropy of formation ΔfS° TBAI and TBATPhB at T = 298.15 K was also determined. Thermodynamic characteristics of fusion and solid-state transition were determined by DSC, their comparison with literature data were carry out; numerical values of enthalpies and entropies of transitions were discussed in dependence of compounds composition.

AB - The heat capacities of crystalline tetrabutylammonium iodide (TBAI) and tetrabutylammonium tetraphenylborate (TBATPhB) were determined over the temperature range 5-350 K by adiabatic vacuum calorimetry, generally with an uncertainty of ±0.2%. The experimental data were used to calculate the standard thermodynamic functions of TBAI and TBATPhB, namely, the heat capacity C p°(T), enthalpy H°(T) - H°(0), entropy S°(T) and Gibbs function G°(T) - H°(0) at p° = 0.1 MPa for the range from T → 0 to T = 350 K. The standard entropy of formation ΔfS° TBAI and TBATPhB at T = 298.15 K was also determined. Thermodynamic characteristics of fusion and solid-state transition were determined by DSC, their comparison with literature data were carry out; numerical values of enthalpies and entropies of transitions were discussed in dependence of compounds composition.

KW - Calorimetry

KW - Fusion

KW - Heat capacity

KW - Tetrabutylammonium iodide

KW - Tetrabutylammonium tetraphenylborate

KW - Thermodynamic characteristics of fusion

KW - Thermodynamic functions

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AN - SCOPUS:58249091990

SN - 0040-6031

VL - 483

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EP - 20

JO - Thermochimica Acta

JF - Thermochimica Acta

IS - 1-2

ER -

Thermodynamic properties of tetrabutylammonium iodide and tetrabutylammonium tetraphenylborate

Abstract

Keywords

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