Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography

Autores
Castells, Reynaldo César; Nardillo, Ángel Miguel
Año de publicación
1985
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The gas chromatographic retention behavior of nineteen halogenated hydrocarbons and of seven saturated hydrocarbons was measured at four temperatures from 55 to 65°C in tri-n-octylphosphine oxide (TOPO) and at 60°C in squalane (SQ). Thermodynamic functions of solution in TOPO were computed from these data. Strongly negative deviations from the ideal behavior were interpreted in terms of halogenated hydrocarbon+TOPO association, and the equilibrium constants were calculated by reference to the inert solvent SQ. The larger equilibrium constants correspond to solutes with a definite proton donor capability. The substitution of Cl for Br, however, produces an increase in the association constants suggesting the existence of other interaction mechanisms. Complexing of halogenated hydrocarbons with TOPO is markedly greater than with ethers, thioethers or tertiary amines.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Química
Tri-n-octylphosphine oxide
Haloalkanes
Infinite dilution activity coefficients
Molecular association
Gas chromatography
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/139202
Acceder
id SEDICI_182f1efba8474d6af01aa39c8f755234
oai_identifier_str oai:sedici.unlp.edu.ar:10915/139202
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatographyCastells, Reynaldo CésarNardillo, Ángel MiguelQuímicaTri-n-octylphosphine oxideHaloalkanesInfinite dilution activity coefficientsMolecular associationGas chromatographyThe gas chromatographic retention behavior of nineteen halogenated hydrocarbons and of seven saturated hydrocarbons was measured at four temperatures from 55 to 65°C in tri-n-octylphosphine oxide (TOPO) and at 60°C in squalane (SQ). Thermodynamic functions of solution in TOPO were computed from these data. Strongly negative deviations from the ideal behavior were interpreted in terms of halogenated hydrocarbon+TOPO association, and the equilibrium constants were calculated by reference to the inert solvent SQ. The larger equilibrium constants correspond to solutes with a definite proton donor capability. The substitution of Cl for Br, however, produces an increase in the association constants suggesting the existence of other interaction mechanisms. Complexing of halogenated hydrocarbons with TOPO is markedly greater than with ethers, thioethers or tertiary amines.Centro de Investigación y Desarrollo en Tecnología de Pinturas1985info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf87-100http://sedici.unlp.edu.ar/handle/10915/139202enginfo:eu-repo/semantics/altIdentifier/issn/0095-9782info:eu-repo/semantics/altIdentifier/issn/1572-8927info:eu-repo/semantics/altIdentifier/doi/10.1007/bf00648898info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:57Zoai:sedici.unlp.edu.ar:10915/139202Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:57.464SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
title Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
spellingShingle Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
Castells, Reynaldo César
Química
Tri-n-octylphosphine oxide
Haloalkanes
Infinite dilution activity coefficients
Molecular association
Gas chromatography
title_short Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
title_full Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
title_fullStr Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
title_full_unstemmed Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
title_sort Thermodynamics of the molecular association of tri-n-octylphosphine oxide and haloalkanes using gas-liquid chromatography
dc.creator.none.fl_str_mv Castells, Reynaldo César
Nardillo, Ángel Miguel
author Castells, Reynaldo César
author_facet Castells, Reynaldo César
Nardillo, Ángel Miguel
author_role author
author2 Nardillo, Ángel Miguel
author2_role author
dc.subject.none.fl_str_mv Química
Tri-n-octylphosphine oxide
Haloalkanes
Infinite dilution activity coefficients
Molecular association
Gas chromatography
topic Química
Tri-n-octylphosphine oxide
Haloalkanes
Infinite dilution activity coefficients
Molecular association
Gas chromatography
dc.description.none.fl_txt_mv The gas chromatographic retention behavior of nineteen halogenated hydrocarbons and of seven saturated hydrocarbons was measured at four temperatures from 55 to 65°C in tri-n-octylphosphine oxide (TOPO) and at 60°C in squalane (SQ). Thermodynamic functions of solution in TOPO were computed from these data. Strongly negative deviations from the ideal behavior were interpreted in terms of halogenated hydrocarbon+TOPO association, and the equilibrium constants were calculated by reference to the inert solvent SQ. The larger equilibrium constants correspond to solutes with a definite proton donor capability. The substitution of Cl for Br, however, produces an increase in the association constants suggesting the existence of other interaction mechanisms. Complexing of halogenated hydrocarbons with TOPO is markedly greater than with ethers, thioethers or tertiary amines.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description The gas chromatographic retention behavior of nineteen halogenated hydrocarbons and of seven saturated hydrocarbons was measured at four temperatures from 55 to 65°C in tri-n-octylphosphine oxide (TOPO) and at 60°C in squalane (SQ). Thermodynamic functions of solution in TOPO were computed from these data. Strongly negative deviations from the ideal behavior were interpreted in terms of halogenated hydrocarbon+TOPO association, and the equilibrium constants were calculated by reference to the inert solvent SQ. The larger equilibrium constants correspond to solutes with a definite proton donor capability. The substitution of Cl for Br, however, produces an increase in the association constants suggesting the existence of other interaction mechanisms. Complexing of halogenated hydrocarbons with TOPO is markedly greater than with ethers, thioethers or tertiary amines.
publishDate 1985
dc.date.none.fl_str_mv 1985
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/139202
url http://sedici.unlp.edu.ar/handle/10915/139202
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0095-9782
info:eu-repo/semantics/altIdentifier/issn/1572-8927
info:eu-repo/semantics/altIdentifier/doi/10.1007/bf00648898
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
87-100
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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