ABSTRACT

The standard (p = 0.1 MPa) molar enthalpies of combustion, DcH m, for the liquid compounds 1-methyl-2-piperidinemethanol, 1-piperidineethanol, and 2-piperidineethanol, were measured by static bomb calorimetry, in oxygen, at T = 298.15 K. The standard molar enthalpies of vaporization, at T = 298.15 K, of these three liquid compounds were determined by Calvet microcalorimetry. These values, were used to derive the standard molar enthalpies of formation of the compounds, at T = 298.15 K, in their liquid and gaseous phase, respectively. The derived standard molar enthalpies of formation, in the gaseous state, are analyzed in terms of enthalpic increments and interpreted in terms of molecular structure.

Compounds

#	Formula	Name
1	CO2	carbon dioxide
2	N2	nitrogen
3	H2O	water
4	O2	oxygen
5	C7H15NO	1-methyl-2-piperidinemethanol
6	C7H15NO	1-(2-hydroxyethyl)piperidine
7	C7H15NO	2-(2-hydroxyethyl)piperidine

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	Phase	Method	#Points
POMD	5	Molar enthalpy, kJ/mol ; Gas	Temperature, K; Gas Pressure, kPa; Gas	Gas	Drop calorimetry	1
POMD	6	Molar enthalpy, kJ/mol ; Gas	Temperature, K; Gas Pressure, kPa; Gas	Gas	Drop calorimetry	1
POMD	7	Molar enthalpy, kJ/mol ; Gas	Temperature, K; Gas Pressure, kPa; Gas	Gas	Drop calorimetry	1
RXND	6 1 2 3 4	Specific internal energy of reaction at constant volume, J/g			Static bomb calorimetry	1
RXND	7 1 2 3 4	Specific internal energy of reaction at constant volume, J/g			Static bomb calorimetry	1
RXND	5 1 2 3 4	Specific internal energy of reaction at constant volume, J/g			Static bomb calorimetry	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Standard molar enthalpies of formation of 1-methyl-2-piperidinemethanol, 1-piperidineethanol, and 2-piperidineethanol

Ribeiro da Silva, M. A. V.[Manuel A. V.], Cabral, J. I. T. A.[Joana I. T. A.]

ABSTRACT