Elimination and migration of hydrogen in the vacuum-ultraviolet photodissociation of pyridine molecules

Tomasz Wąsowicz; Iwona Dąbkowska; Antti Kivimäki; Marcello Coreno; Mariusz Zubek

doi:10.1088/1361-6455/50/1/015101

Elimination and migration of hydrogen in the vacuum-ultraviolet photodissociation of pyridine molecules

Abstract

Elimination of the excited hydrogen atoms H(n), n = 4–7, and hydrogen migration in formation of the excited NH(A 3Π) free radicals in the photodissociation of pyridine, C5H5N, molecules have been studied over the 17.5–70 eV photon energy range. In the measurements the photon-induced fluorescence spectroscopy technique has been applied. Both fragments are produced through excitation of pyridine molecules into higher-lying superexcited Rydberg or doubly excited states. The mechanisms for fragmentation of pyridine into H(n) and NH(A 3Π) are discussed. Ab initio quantum chemical calculations have been performed to elucidate the hydrogen migration mechanism in the NH formation, which is not a self-contained unit in the structure of pyridine.

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Authors (5)

Tomasz Wąsowicz dr hab.
Iwona Dąbkowska
- Uniwersytet Gdański Department of Chemistry
Antti Kivimäki
- CNR-IOM Laboratorio TASC
Marcello Coreno
- Gas Phase beamline@Elettra CNR-IMIP
Mariusz Zubek prof. dr hab. inż.

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS no. 50, edition 1, pages 1 - 9,
ISSN: 0953-4075
Language:: English
Publication year:: 2017
Bibliographic description:: Wąsowicz T., Dąbkowska I., Kivimäki A., Coreno M., Zubek M.: Elimination and migration of hydrogen in the vacuum-ultraviolet photodissociation of pyridine molecules// JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. -Vol. 50, iss. 1 (2017), s.1-9
DOI:: Digital Object Identifier (open in new tab) 10.1088/1361-6455/50/1/015101
Verified by:: Gdańsk University of Technology