ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Mass spectra of isotope-labeled triptycenes, triphenylmethanes and diphenylmethanes rule out the bulk of postulated decomposition mechanisms and fragment-ion structures. The formation of [M — H]+ and [M — 2H]2+ from triptycene, of [M — H]+, [M — CH3]+ and [M — CH4]+ from triphenylmethane, and of [M — H]2+ and [M — 2H]2+-as well as the previously reported [M — H]+ and [M — CH3]+-from diphenylmethane all seem to be preceded or accompanied by complete loss of position identity of the α and ring hydrogens in the original molecules. A statistical preference for loss of α hydrogens is found in the process leading to [M — 2H]+ and [M — H]2+ from triptycene, as in the formation of [M — H]2+ from toluene.
Additional Material:
6 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210030114
