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06:53
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Electron attachment to propargyl chloride, 305-540 K
Joseph C Bopp1, Thomas M Miller, Jeffrey F Friedman
1Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, USA.
The Journal of Chemical Physics
|October 26, 2010
Summary
Electron attachment to propargyl chloride is inefficient, forming only chloride ions (Cl(-)). The attachment rate coefficient increases with temperature, from 1.6×10(-10) cm(3)s(-1) at 305 K to 1.1×10(-9) cm(3)s(-1) at 540 K.
Area of Science:
- Physical Chemistry
- Chemical Physics
- Atmospheric Chemistry
Background:
- Propargyl chloride (HC≡C-CH(2)Cl) is a reactive organic halide.
- Understanding electron attachment processes is crucial for atmospheric and plasma chemistry.
- Previous studies on electron attachment to similar molecules provide context.
Purpose of the Study:
- To investigate the electron attachment process to propargyl chloride.
- To determine the temperature dependence of the electron attachment rate coefficient.
- To identify the primary ion products of electron attachment.
Main Methods:
- Utilized a flowing-afterglow Langmuir-probe (FALP) apparatus.
- Studied electron attachment over a temperature range of 305 to 540 K.
- Analyzed ion products and measured rate coefficients.
Main Results:
- The only observed ion product was chloride ion (Cl(-)).
- Electron attachment was found to be inefficient, requiring corrections for competing reactions.
- The electron attachment rate coefficient increased from 1.6×10(-10) cm(3)s(-1) at 305 K to 1.1×10(-9) cm(3)s(-1) at 540 K.
Conclusions:
- Electron attachment to propargyl chloride primarily yields Cl(-) ions.
- The rate of electron attachment to propargyl chloride is temperature-dependent.
- The findings contribute to the understanding of electron-molecule interactions in reactive environments.
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