Enthalpies of combustion and formation of 3-formylchromones

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 2006 English Publisher:Elsevier BVJournal:Thermochimica Acta, volume 450, pages 35-37 (issn: 0040-6031,

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Authors: Henoc Flores; Yessica I. López; Patricia Amador;

doi: 10.1016/j.tca.2006.07.010

Enthalpies of combustion and formation of 3-formylchromones

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Abstract

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 ( Δ c U m 0 ( 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 ( Δ f H m ° ( cr, 298.15 K ) ) are: −(340.2 ± 2.2), −(355.1 ± 3.1) and −(415.5 ± 3.0) kJ mol −1 , respectively.s

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Benemérita Universidad Autónoma de Puebla
Mexico

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