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Issue 29, 2015
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Assignment of high-lying bending mode levels in the threshold photoelectron spectrum of NH2: a comparison between pyrolysis and fluorine-atom abstraction radical sources

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Abstract

In this manuscript we present threshold photoelectron spectra (TPES) of the amidogen radical, NH2, recorded at two vacuum ultraviolet synchrotron radiation beamlines, the DESIRS beamline of Synchrotron SOLEIL and the VUV beamline of the Swiss Light Source (SLS). Amidogen radicals were generated by two different methods, (a) H-atom abstraction of ammonia in a fluorine microwave discharge flow tube and (b) flash pyrolysis of methylhydrazine and diphenylmethylamine. Due to the large geometry change upon photoionization from the bent neutral molecule NH2 ([X with combining tilde] 2B1) to the quasi-linear cation NH2+ ([X with combining tilde] 3B1), significant activity in the bending vibration υ2+ of NH2+ ([X with combining tilde] 3B1) is observed in the TPES. Transitions into a large number of υ2+, Ka+ levels of the cation are resolved.

Graphical abstract: Assignment of high-lying bending mode levels in the threshold photoelectron spectrum of NH2: a comparison between pyrolysis and fluorine-atom abstraction radical sources

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Article information


Submitted
22 May 2015
Accepted
29 Jun 2015
First published
30 Jun 2015

Phys. Chem. Chem. Phys., 2015,17, 19507-19514
Article type
Paper
Author version available

Assignment of high-lying bending mode levels in the threshold photoelectron spectrum of NH2: a comparison between pyrolysis and fluorine-atom abstraction radical sources

F. Holzmeier, M. Lang, I. Fischer, P. Hemberger, G. A. Garcia, X. Tang and J.-C. Loison, Phys. Chem. Chem. Phys., 2015, 17, 19507
DOI: 10.1039/C5CP02964C

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