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Metastable ion decomposition and collisional activation mass spectra of 1,2,3‐triarylpropen‐1‐ones
Author(s) -
Madhusudanan K. P.,
Durani S.,
Reddy D. M.,
Kapil R. S.,
Itagaki Y.,
Nojima K.
Publication year - 1991
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210260422
Subject(s) - biphenylene , diphenylacetylene , ion , chemistry , metastability , mass spectrum , phenanthrene , crystallography , decomposition , spectral line , polyatomic ion , analytical chemistry (journal) , organic chemistry , physics , polymer , phenylene , astronomy , catalysis
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‐1‐ones. An attempt has been made to confirm the structures of the rearrangement ions, [C 14 H 10 ] + ˙, [C 13 H 11 ] + ˙, [C 13 H 9 ] + and [C 12 H 8 ] + ˙ by comparison of their CA spectra with those of the corresponding ions produced from reference compounds. The results imply that [C 14 H 10 ] + ˙ and the M + ˙ ions of phenanthrene and diphenylacetylene have a common structure, [C 13 H 9 ] + and the fluorenyl cation have a common structure and [C 12 H 8 ] + ˙ 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.