Mass spectrometric studies of the oxocarbons CnOn (n=3-6)

Schroder, Detlef, Schwarz, Helmut, Dua, Suresh, Blanksby, Stephen J., & Bowie, John H. (1999) Mass spectrometric studies of the oxocarbons CnOn (n=3-6). International Journal of Mass Spectrometry, 188(1-2), pp. 17-25.

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The anion radicals CnOn-. (n = 3-6) can be generated by ionization of cyclic carbonyl compounds in the negative ion mode. The ions as well as the corresponding neutral counterparts are probed by means of different mass spectrometric techniques. The results suggest that oxocarbons, i.e. cyclic polyketones, are formed under conservation of the skeletons of the precursor molecules. At least for n = 3, however, the experimental findings indicate partial rearrangement of the expected cyclopropanetrione structure to an oxycarboxylate for the anion, i.e. O-.-C=C-CO2-. For n = 4 and 6 almost complete dissociation of the neutral polyones into carbon monoxide is found, whereas for n = 5 a distinct recovery signal indicates the generation of genuine cyclopentanepentaone.

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ID Code: 70671
Item Type: Journal Article
Refereed: Yes
Keywords: oxocarbons, polyketones, anion radicals, mass spectrometry, neutralization-reionization, gas-phase reactivity, neutral molecules, negative-ions, radical-anion, generation, ethylenedione, cation, probe, c6s6
DOI: 10.1016/s1387-3806(98)14208-2
ISSN: 1387-3806
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 1999 Elsevier Science B.V.
Deposited On: 29 Apr 2014 04:25
Last Modified: 29 Apr 2014 04:25

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