Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/4429
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Type: Journal article
Title: Ethylenedione: An intrinsically short-lived molecule
Author: Schroder, D.
Heinemann, C.
Schwarz, H.
Harvey, J.
Dua, S.
Blanksby, S.
Bowie, J.
Citation: Chemistry: A European Journal, 1998; 4(12):2550-2557
Publisher: WILEY-V C H VERLAG GMBH
Issue Date: 1998
ISSN: 0947-6539
1521-3765
Statement of
Responsibility: 
Schröder, Detlef ; Heinemann, Christoph ; Schwarz, Helmut ; Harvey, Jeremy N. ; Dua, Suresh ; Blanksby, Stephen J. ; Bowie, John H.
Abstract: Ethylenedione C2O2 is one of the elusive small molecules which have remained undetected even after numerous attempts with different experimental techniques. This is surprising, since theoretical studies predicted the triplet state of C2O2 to be stable towards spin-allowed dissociation and hence long-lived. Here we report a comprehensive study of charged and neutral ethylenedione by means of charge reversal and neutralization-reionization mass spectrometry. These experimental results, in conjunction with theoretical calculations, suggest that neutral ethylenedione is intrinsically short-lived rather than being elusive. Both the singlet and triplet states of C2O2 are predicted to dissociate rapidly into two ground-state CO molecules, and for the triplet species, this dissociation involves facile curve-crossing to the singlet surface within a few nanoseconds.
DOI: 10.1002/(SICI)1521-3765(19981204)4:12<2550::AID-CHEM2550>3.0.CO;2-E
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