EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)

On the basis of previous and current studies, it has been possible to evaluate and compare the bond dissociation energies of the phenol (O-H) bond and of the methylene and methyl (C-H) bonds in Irganox (trade name) by means of electron paramagnetic resonance records of galvinoxyl-irganoxyl hydrogen...

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Publicado:	2010
Materias:	Bond dissociation energies Bond dissociation enthalpies C-H bond Electron paramagnetic resonance Hydrogen-transfer reactions Methylene groups O-H bond Phenolic antioxidant Trade name Trimethyl Benzene Dissociation Electron resonance Enthalpy Paramagnetic resonance Paramagnetism Phenols Hydrogen bonds
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09379347_v38_n1_p19_Mendiara http://hdl.handle.net/20.500.12110/paper_09379347_v38_n1_p19_Mendiara
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09379347_v38_n1_p19_Mendiara
record_format	dspace
spelling	paper:paper_09379347_v38_n1_p19_Mendiara2025-07-30T18:29:30Z EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox) Bond dissociation energies Bond dissociation enthalpies C-H bond Electron paramagnetic resonance Hydrogen-transfer reactions Methylene groups O-H bond Phenolic antioxidant Trade name Trimethyl Benzene Dissociation Electron resonance Enthalpy Paramagnetic resonance Paramagnetism Phenols Hydrogen bonds On the basis of previous and current studies, it has been possible to evaluate and compare the bond dissociation energies of the phenol (O-H) bond and of the methylene and methyl (C-H) bonds in Irganox (trade name) by means of electron paramagnetic resonance records of galvinoxyl-irganoxyl hydrogen transfer reaction equilibria. The bond dissociation enthalpy of the C-H methylene and methyl bonds in Irganox was found to be 339. 0 ± 3. 0 kJ/mol, very close to the previously found value of 340. 7 ± 3. 0 kJ/mol for the O-H bond of some benzyl-phenolic antioxidant. © Springer 2009. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09379347_v38_n1_p19_Mendiara http://hdl.handle.net/20.500.12110/paper_09379347_v38_n1_p19_Mendiara
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Bond dissociation energies Bond dissociation enthalpies C-H bond Electron paramagnetic resonance Hydrogen-transfer reactions Methylene groups O-H bond Phenolic antioxidant Trade name Trimethyl Benzene Dissociation Electron resonance Enthalpy Paramagnetic resonance Paramagnetism Phenols Hydrogen bonds
spellingShingle	Bond dissociation energies Bond dissociation enthalpies C-H bond Electron paramagnetic resonance Hydrogen-transfer reactions Methylene groups O-H bond Phenolic antioxidant Trade name Trimethyl Benzene Dissociation Electron resonance Enthalpy Paramagnetic resonance Paramagnetism Phenols Hydrogen bonds EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)
topic_facet	Bond dissociation energies Bond dissociation enthalpies C-H bond Electron paramagnetic resonance Hydrogen-transfer reactions Methylene groups O-H bond Phenolic antioxidant Trade name Trimethyl Benzene Dissociation Electron resonance Enthalpy Paramagnetic resonance Paramagnetism Phenols Hydrogen bonds
description	On the basis of previous and current studies, it has been possible to evaluate and compare the bond dissociation energies of the phenol (O-H) bond and of the methylene and methyl (C-H) bonds in Irganox (trade name) by means of electron paramagnetic resonance records of galvinoxyl-irganoxyl hydrogen transfer reaction equilibria. The bond dissociation enthalpy of the C-H methylene and methyl bonds in Irganox was found to be 339. 0 ± 3. 0 kJ/mol, very close to the previously found value of 340. 7 ± 3. 0 kJ/mol for the O-H bond of some benzyl-phenolic antioxidant. © Springer 2009.
title	EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)
title_short	EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)
title_full	EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)
title_fullStr	EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)
title_full_unstemmed	EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)
title_sort	epr equilibration measurement of the c-h bond enthalpy in the methylene groups of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (irganox)
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09379347_v38_n1_p19_Mendiara http://hdl.handle.net/20.500.12110/paper_09379347_v38_n1_p19_Mendiara
_version_	1840322532460199936

EPR equilibration measurement of the C-H bond enthalpy in the methylene groups of 1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (Irganox)

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