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Sublimation/vaporization and solvation enthalpies of monosubstituted pyridine derivatives

open access: yesChemical Thermodynamics and Thermal Analysis, 2022
Different sectors, including medicine and display technology, utilize substituted pyridines. To establish the quality of products manufactured from pyridines, chemical thermodynamics of the solvation and evaporation enthalpies of the pyridines are ...
Rawand S. Abdullah, Boris N. Solomonov
doaj   +2 more sources

First-principles calculations of solid-phase enthalpy of formation of energetic materials [PDF]

open access: yesCommunications Chemistry
The solid-phase enthalpy of formation (∆H f, solid ) of energetic materials was generally predicted from the gas-phase enthalpy of formation (∆H f, gas ) and sublimation enthalpy (∆H sub ).
Lixiang Zhong   +5 more
doaj   +2 more sources

Exploring the Volatility, Phase Transitions, and Solubility Properties of Five Halogenated Benzaldehydes [PDF]

open access: yesMolecules
Halogenated benzaldehydes possess unique chemical properties that render them valuable in pharmaceutical synthesis, pesticide formulation, and dye production. However, thorough thermodynamic data for these compounds remain scarce. This study aims to fill
Ana R. R. P. Almeida   +5 more
doaj   +2 more sources

Sublimation Enthalpies of Substituted Pyridine N-Oxides [PDF]

open access: yesRussian Journal of General Chemistry, 2021
The enthalpies of sublimation of five substituted pyridine N-oxides were determined by the Knudsen effusion method with mass spectrometric control of the vapor composition within the framework of the second law of thermodynamics. The sublimation enthalpy of mono-substituted compounds 4-X-PyO depends on the nature of the substituent X and increases in ...
N. V. Belova   +4 more
openaire   +2 more sources

Thermochemical Study of 1-Methylhydantoin

open access: yesMolecules, 2022
Using static bomb combustion calorimetry, the combustion energy of 1-methylhydantoin was obtained, from which the standard molar enthalpy of formation of the crystalline phase at T = 298.15 K of the compound studied was calculated.
Juan M. Ledo   +3 more
doaj   +1 more source

Vapor Composition and Vaporization Thermodynamics of 1-Ethyl-3-methylimidazolium Hexafluorophosphate Ionic Liquid

open access: yesAppliedChem, 2023
The processes of the sublimation and thermal decomposition of the 1-ethyl-3-methylimidazolium hexafluorophosphate ionic liquid (EMImPF6) were studied by a complex approach including Knudsen effusion mass spectrometry, IR and NMR spectroscopy, and quantum
Anatoliy M. Dunaev   +5 more
doaj   +1 more source

Thermodynamic properties of temozolomide in crystalline and gaseous aggregate states

open access: yesЖурнал Белорусского государственного университета: Химия, 2022
Temozolomide (4-methyl-5-oxo-2,3,4,6,8-pentazabicyclo[4,3,0]nona-2,7,9-triene-9-carboxamide) is an active component of antitumor immunosuppressive alkylating drugs, and it used largely for the treatment of various types of malignant tumors, including ...
Yana N. Yurkshtovich, Andrey V. Blokhin
doaj   +1 more source

Phase transitions properties of N,N-dimethyl-4-nitroaniline

open access: yesU.Porto Journal of Engineering, 2023
The present work reports an experimental study aiming to determine several thermodynamic properties of fusion and sublimation of the chromophore N,N-dimethyl-4-nitroaniline.
Bruno D. A. Pinheiro   +2 more
doaj   +1 more source

Experimental and Theoretical Investigation on the Thermochemistry of 3-Methyl-2-benzoxazolinone and 6-Nitro-2-benzoxazolinone

open access: yesMolecules, 2021
The determination of the reliable thermodynamic properties of 2-benzoxazolinone derivatives is the main goal of this work. Some correlations are established between the energetic properties determined and the structural characteristics of the title ...
Ana L. R. Silva   +2 more
doaj   +1 more source

Energetic Effects in Methyl- and Methoxy-Substituted Indanones: A Synergistic Experimental and Computational Study

open access: yesApplied Sciences, 2023
This experimental and computational study on the energetic properties of 2-methyl-, 3-methyl-, 4-methoxy- and 5-methoxy-indanones has been carried out using mostly calorimetric techniques and a suitable computational approach.
Ana L. R. Silva   +2 more
doaj   +1 more source

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