2
0
2009
pan
ant
0
journal
Original
Panneerselvam, K.
Antony, M. P.
Srinivasan, T. G.
Rao, P. R. V.
Thermochim. Acta
2009
2020-09-29
Enthalpies of vaporization of N,N-dialkyl monamides at 298.15K
Enthalpies of vaporization of several N,N-dialkyl monamides have been measured by correlation gas chromatography. The enthalpy values of the compounds are derived by an extrapolativemethod using the knownenthalpy of vaporization values of basic amides at 298.15 K, usedas standards. First order molecular connectivity valence indices of these amides (1 ) as described by Kier and Hall have been evaluated and are found to have an excellent correlation with measured enthalpies of vaporization in addition to several other indices, such as, solvent accessible surface area (SAS), molecular surface area (MSA) and solvent excluded volume (SEV). The quantitative structure property relationship (QSPR) approach is used to predict the enthalpies of vaporization from molecular connectivity valence index.
Enthalpy of vaporization
Correlation gas chromatography
N,N-dialkyl monamides
Molecular descriptors
QSPR
10.1016/j.tca.2009.05.007
1-2
495
1-4
1
InChI=1S/C3H7NO/c1-4(2)3-5/h3H,1-2H3
ZMXDDKWLCZADIW-UHFFFAOYSA-N
dimethylformamide
DMF
DMFA
N,N-dimethylformamide
N,N-dimethylmethanamide
dimethylformamide (DMF)
C3H7NO
1
Commercial source
1
99
2
Estimated by the compiler
2
InChI=1S/C4H9NO/c1-4(6)5(2)3/h1-3H3
FXHOOIRPVKKKFG-UHFFFAOYSA-N
N,N-dimethylethanamide
N,N-dimethylacetamide
N,N-dimethylacetamide [DMA]
C4H9NO
1
Commercial source
1
99
2
Estimated by the compiler
3
InChI=1S/C6H13NO/c1-4-7(5-2)6(3)8/h4-5H2,1-3H3
AJFDBNQQDYLMJN-UHFFFAOYSA-N
N,N-diethylacetamide
N,N-diethylethanamide
C6H13NO
1
Commercial source
1
99
2
Estimated by the compiler
4
InChI=1S/C16H33NO/c1-4-7-10-11-12-13-16(18)17(14-8-5-2)15-9-6-3/h4-15H2,1-3H3
IRACWGPKDYUZEC-UHFFFAOYSA-N
N,N-dibutyloctanamide
C16H33NO
1
Synthesized by the authors
1
98
2
Estimated by the compiler
5
InChI=1S/C18H37NO/c1-4-7-10-13-16-19(17-14-11-8-5-2)18(20)15-12-9-6-3/h4-17H2,1-3H3
PTNKBMIGCUULJJ-UHFFFAOYSA-N
N,N-dihexylhexanamide
C18H37NO
1
Synthesized by the authors
1
98
2
Estimated by the compiler
6
InChI=1S/C20H41NO/c1-4-7-10-13-14-17-20(22)21(18-15-11-8-5-2)19-16-12-9-6-3/h4-19H2,1-3H3
ZFDFITYPADKELQ-UHFFFAOYSA-N
N,N-dihexyloctanamide
C20H41NO
1
Synthesized by the authors
1
98
2
Estimated by the compiler
7
InChI=1S/C20H41NO/c1-7-11-13-18(9-3)15-21(20(22)17(5)6)16-19(10-4)14-12-8-2/h17-19H,7-16H2,1-6H3
TYDFWJHDNHXBRF-UHFFFAOYSA-N
N,N-di-2-ethylhexylisobutyramide
C20H41NO
1
Synthesized by the authors
1
98
2
Estimated by the compiler
8
InChI=1S/C22H45NO/c1-4-7-10-12-14-17-20-23(22(24)19-16-9-6-3)21-18-15-13-11-8-5-2/h4-21H2,1-3H3
WRJVSLJKWITHBC-UHFFFAOYSA-N
hexanamide, N,N-dioctyl-
C22H45NO
1
Synthesized by the authors
1
98
2
Estimated by the compiler
1
1
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
46.65
4
1
1.46
2
2
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
50.66
4
1
1.81
3
3
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
53.7
4
1
1.53
4
4
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
75.58
4
1
2.13
5
5
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
80.44
4
1
3.59
6
6
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
82.89
4
1
1.83
7
7
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
79.08
4
1
2.42
8
8
1
Principal objective of the work
VVD
TRC
11/17/2009
1
Molar enthalpy of transition or fusion, kJ/mol
Correlation gas chromatography
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
1
298.15
5
1
88.08
4
1
2.64