Morais, Victor M. F. published the artcileThermochemical study of chloropyrazines and chloroquinoxalines, Formula: C8H2Cl4N2, the main research area is enthalpy formation combustion vaporization sublimation chloropyrazine chloroquinoxaline; mol structure chloropyrazine chloroquinoxaline DFT.
The standard (p° = 0.1 MPa) molar enthalpies of formation for liquid 2-chloropyrazine and crystalline 2,6-dichloropyrazine, 2,3-dichloroquinoxaline and 2,3,6,7-tetrachloroquinoxaline were derived from the standard molar enthalpies of combustion, in oxygen, to yield CO2(g), N2(g), and HCl·600H2O(l), at the temperature T = 298.15 K, measured by rotating-bomb combustion calorimetry. The standard molar enthalpies of vaporization or of sublimation, at T = 298.15 K, were measured by Calvet microcalorimetry. D. functional theory with the B3LYP functional and two different basis sets, 6-31G* and 6-311G*, was used to optimize the geometries of all chloro-substituted pyrazines and some chloro-substituted quinoxalines. The calculation of the energy of isodesmic reactions allowed the estimation of the standard molar enthalpies of formation in the gas phase for all compounds, including some not studied exptl.
Journal of Chemical Thermodynamics published new progress about Combustion enthalpy. 25983-14-6 belongs to class quinoxaline, name is 2,3,6,7-Tetrachloroquinoxaline, and the molecular formula is C8H2Cl4N2, Formula: C8H2Cl4N2.
Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider