Isomer-Selective Generation and Spectroscopic Characterization of Picolyl Radicals

Angewandte Chemie
Engelbert ReuschIngo Fischer

Abstract

Nitrogen-containing resonance-stabilized radicals such as the picolyl radical are important in combustion chemistry and astrochemistry. They have only been scarcely studied because an isomer-selective generation is often difficult. Herein, we present threshold photoelectron spectra of the three picolyl radical isomers, C6 H6 N, that were obtained with synchrotron radiation. The radicals were selectively generated by flash pyrolysis from aminomethylpyridine precursors through deamination. Ionization energies of 7.70, 7.59, and 8.01 eV were determined for 2-, 3-, and 4-picolyl, respectively. The observed vibrational structure was assigned to an in-plane deformation mode of the aromatic ring. The spectroscopic insight gained in this study can be used to distinguish different picolyl isomers in on-line combustion analysis, for example.

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Citations

Jan 18, 2018·Physical Chemistry Chemical Physics : PCCP·D SchleierK Voronova
Nov 7, 2017·Physical Chemistry Chemical Physics : PCCP·Andras BodiRichard P Tuckett
Nov 27, 2018·Physical Chemistry Chemical Physics : PCCP·Jordy BouwmanPatrick Hemberger
Jul 5, 2019·Angewandte Chemie
Sep 12, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Domenik SchleierIngo Fischer
Oct 23, 2019·Chemistry : a European Journal·Engelbert ReuschPatrick Hemberger
Jan 20, 2018·Physical Chemistry Chemical Physics : PCCP·D KaiserI Fischer
Dec 20, 2019·Physical Chemistry Chemical Physics : PCCP·D P MukhopadhyayG A Garcia
Nov 26, 2020·Chemical Communications : Chem Comm·Xiaofeng TangLaurent Nahon
Jan 7, 2021·Physical Chemistry Chemical Physics : PCCP·Domenik SchleierIngo Fischer
Jul 20, 2021·The Journal of Physical Chemistry Letters·Lea BosseGraham Worth
Jun 27, 2019·The Journal of Physical Chemistry. a·Ivan AntonovLeonid Sheps
Aug 15, 2021·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Marius GerlachIngo Fischer
Sep 21, 2018·The Journal of Physical Chemistry Letters·Domenik SchleierRoland Mitric
Mar 27, 2020·The Journal of Physical Chemistry. a·Enrique Mendez-VegaPatrick Hemberger
Feb 19, 2019·The Journal of Physical Chemistry. a·Engelbert ReuschPatrick Hemberger
Sep 27, 2019·The Journal of Physical Chemistry. a·Helgi Rafn HrodmarssonJean-Christophe Loison
Oct 3, 2017·Journal of the American Chemical Society·Mathias SteglichPatrick Hemberger

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