Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane

The diffusion coefficients of decamethylferrocene (Fe(Cp*) 2) and decamethylferrocenium hexafluorophosphate (Fe(Cp*) 2PF 6) in supercritical trifluoromethane (CHF 3) were measured at a temperature of 323.15 K, as a function of density, with tetrabutylammonium hexafluorophosphate (TBAPF 6) as the sup...

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Autores principales:	Goldfarb, Darío Leonardo, Corti, Horacio Roberto
Publicado:	2004
Materias:	Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15206106_v108_n10_p3368_Goldfarb http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3368_Goldfarb
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_15206106_v108_n10_p3368_Goldfarb
record_format	dspace
spelling	paper:paper_15206106_v108_n10_p3368_Goldfarb2023-06-08T16:18:51Z Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane Goldfarb, Darío Leonardo Corti, Horacio Roberto Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds The diffusion coefficients of decamethylferrocene (Fe(Cp) 2) and decamethylferrocenium hexafluorophosphate (Fe(Cp) 2PF 6) in supercritical trifluoromethane (CHF 3) were measured at a temperature of 323.15 K, as a function of density, with tetrabutylammonium hexafluorophosphate (TBAPF 6) as the supporting electrolyte, using a voltammetric technique on a platinum microelectrode. The diffusion in subcritical CHF 3 was also studied, to analyze the differences in the behavior of both solutes in the low- and high-density regions. Application of the Oldham, Cardwell, Santos, and Bond theory allowed the effect of ion pairing on the limiting current to be considered. The density dependence of the diffusion coefficients of the different species has been discussed on the basis of the continuum hydrodynamic model and the clustering of solvent around solute molecules in the low-density supercritical region. The predictions of the compressible continuum model for the case of the diffusion of the free ions and the ion pair also have been discussed. Fil:Goldfarb, D.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Corti, H.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15206106_v108_n10_p3368_Goldfarb http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3368_Goldfarb
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds
spellingShingle	Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds Goldfarb, Darío Leonardo Corti, Horacio Roberto Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
topic_facet	Critical density Supercritical solvents Aromatic hydrocarbons Diffusion Electric conductivity Electrochemistry Electrolytes Phosphates Probability density function Solvents Supercritical fluids Thermal effects Organic compounds
description	The diffusion coefficients of decamethylferrocene (Fe(Cp) 2) and decamethylferrocenium hexafluorophosphate (Fe(Cp) 2PF 6) in supercritical trifluoromethane (CHF 3) were measured at a temperature of 323.15 K, as a function of density, with tetrabutylammonium hexafluorophosphate (TBAPF 6) as the supporting electrolyte, using a voltammetric technique on a platinum microelectrode. The diffusion in subcritical CHF 3 was also studied, to analyze the differences in the behavior of both solutes in the low- and high-density regions. Application of the Oldham, Cardwell, Santos, and Bond theory allowed the effect of ion pairing on the limiting current to be considered. The density dependence of the diffusion coefficients of the different species has been discussed on the basis of the continuum hydrodynamic model and the clustering of solvent around solute molecules in the low-density supercritical region. The predictions of the compressible continuum model for the case of the diffusion of the free ions and the ion pair also have been discussed.
author	Goldfarb, Darío Leonardo Corti, Horacio Roberto
author_facet	Goldfarb, Darío Leonardo Corti, Horacio Roberto
author_sort	Goldfarb, Darío Leonardo
title	Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
title_short	Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
title_full	Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
title_fullStr	Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
title_full_unstemmed	Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane
title_sort	diffusion of decamethylferrocene and decamethylferrocenium hexafluorophosphate in supercritical trifluoromethane
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15206106_v108_n10_p3368_Goldfarb http://hdl.handle.net/20.500.12110/paper_15206106_v108_n10_p3368_Goldfarb
work_keys_str_mv	AT goldfarbdarioleonardo diffusionofdecamethylferroceneanddecamethylferroceniumhexafluorophosphateinsupercriticaltrifluoromethane AT cortihoracioroberto diffusionofdecamethylferroceneanddecamethylferroceniumhexafluorophosphateinsupercriticaltrifluoromethane
_version_	1768545944083628032

Diffusion of Decamethylferrocene and Decamethylferrocenium Hexafluorophosphate in Supercritical Trifluoromethane

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