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Metastable ion decomposition and collisional activation mass spectra of 1,2,3-triarylpropen-1-ones

✍ Scribed by K. P. Madhusudanan; S. Durani; D. M. Reddy; R. S. Kapil; Y. Itagaki; K. Nojima

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 513 KB
Volume: 26
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210260422

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✦ Synopsis

Substituents

have been found to have a marked influence on the metastable ion decompositions and collisionally activated (CA) fragmentations of the M" ion of a number of 1,2,3-triarylpropen-l-ones. An attempt has been made to confirm the structures of the rearrangement ions, IC,,H,,I+*, [C13Hll]+, [CljH9l+ and [C,,HS]+' by comparison of their CA spectra with those of the corresponding ions produced from reference compounds. The results imply that [C,,Hloj +. and the M" ions of phenanthrene and diphenylacetylene have a common structure, ICI3H9]+ and the fluorenyl cation have a common structure and [C,,H,] +' and biphenylene molecular ion have a common structure. The available data indicate that the ion at m/z 167 consists of a mixture of structures, likely possibilities being diphenylmethyl, phenyltropylium and dihydrofluorenyl cations.

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