Trends in electron-ion dissociative recombination of benzene analogs with functional group substitutions: Negative Hammett σpara values

David Osborne; Patrick Andrew Lawson; Nigel Adams; Itzhak Dotan

doi:10.1016/j.icarus.2014.02.017

Trends in electron-ion dissociative recombination of benzene analogs with functional group substitutions: Negative Hammett σ_para values

David Osborne
, Patrick Andrew Lawson
, Nigel Adams
, Itzhak Dotan

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

An in-depth study of the effects of functional group substitution on benzene's electron-ion dissociative recombination (e-IDR) rate constant has been conducted. The e-IDR rate constants for benzene, biphenyl, toluene, ethylbenzene, anisole, phenol, and aniline have been measured using a Flowing Afterglow equipped with an electrostatic Langmuir probe (FALP). These measurements have been made over a series of temperatures from 300 to 550. K. A relationship between the Hammett σ_para values for each compound and rate constant has indicated a trend in the e-IDR rate constants and possibly in their temperature dependence data. The Hammett σ_para value is a method to describe the effect a functional group substituted to a benzene ring has upon the reaction rate constant.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Icarus
Volume	235
DOIs	https://doi.org/10.1016/j.icarus.2014.02.017
State	Published - Jun 2014

Bibliographical note

Funding Information:
The authors gratefully acknowledge the suggestions of Inbal Tuvi-Arad from the Open University of Israel and the support of NASA under Grant, NNX10AB96G.

Keywords

Titan

Access to Document

10.1016/j.icarus.2014.02.017

Cite this

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title = "Trends in electron-ion dissociative recombination of benzene analogs with functional group substitutions: Negative Hammett σpara values",

abstract = "An in-depth study of the effects of functional group substitution on benzene's electron-ion dissociative recombination (e-IDR) rate constant has been conducted. The e-IDR rate constants for benzene, biphenyl, toluene, ethylbenzene, anisole, phenol, and aniline have been measured using a Flowing Afterglow equipped with an electrostatic Langmuir probe (FALP). These measurements have been made over a series of temperatures from 300 to 550. K. A relationship between the Hammett σpara values for each compound and rate constant has indicated a trend in the e-IDR rate constants and possibly in their temperature dependence data. The Hammett σpara value is a method to describe the effect a functional group substituted to a benzene ring has upon the reaction rate constant.",

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AU - Osborne, David

AU - Lawson, Patrick Andrew

AU - Adams, Nigel

AU - Dotan, Itzhak

N1 - Funding Information: The authors gratefully acknowledge the suggestions of Inbal Tuvi-Arad from the Open University of Israel and the support of NASA under Grant, NNX10AB96G.

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