ABSTRACT

The enthalpies of combustion of 3-formylchromone (3F), 3-formyl-6-methylchromone (3F6M) and 3-formyl-6-isopropylchromone (3F6I) were determined by combustion calorimetry. The molar combustion energies ( cU0m (cr, 298.15 K)) of the 3F, 3F6M and 3F6I are: .(4452.4 }1.8), .(5115.6 }2.7) and .(6411.4 }2.5) kJ mol.1, respectively. The formation enthalpies in the crystalline state ( fH.m (cr, 298.15 K)) are: .(340.2 }2.2), .(355.1 }3.1) and .(415.5 }3.0) kJ mol.1, respectively.s

Compounds

#	Formula	Name
1	CO2	carbon dioxide
2	H2O	water
3	O2	oxygen
4	C10H6O3	3-formylchromone
5	C11H8O3	3-formyl-6-methylchromone
6	C13H12O3	3-formyl-6-isopropylchromone

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	4	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Gas	DSC	1
POMD	4	Triple point temperature, K ; Crystal		Crystal Liquid Gas	DTA	1
POMD	4	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	4	Mass density, kg/m3 ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Pycnometric method	1
POMD	5	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Gas	DSC	1
POMD	5	Triple point temperature, K ; Crystal		Crystal Liquid Gas	DTA	1
POMD	5	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	5	Mass density, kg/m3 ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Pycnometric method	1
POMD	6	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Gas	DSC	1
POMD	6	Triple point temperature, K ; Crystal		Crystal Liquid Gas	DTA	1
POMD	6	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	6	Mass density, kg/m3 ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Pycnometric method	1
RXND	4 1 2 3	Specific internal energy of reaction at constant volume, J/g			Static bomb calorimetry	1
RXND	5 1 2 3	Specific internal energy of reaction at constant volume, J/g			Static bomb calorimetry	1
RXND	6 1 2 3	Specific internal energy of reaction at constant volume, J/g			Static bomb calorimetry	1

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Enthalpies of combustion and formation of 3-formylchromones

Flores, H.[Henoc], Lopez, Y. I.[Yessica I.], Amador, P.[Patricia]

ABSTRACT