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Investigation of singly charged dihalomethanes by collision spectroscopy
Author(s) -
Bortolini O.,
Hamadan M.,
Traldi P.
Publication year - 1992
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290060115
Subject(s) - chemistry , ion , dissociation (chemistry) , mass spectrometry , translational energy , x ray photoelectron spectroscopy , spectroscopy , atomic physics , analytical chemistry (journal) , bond dissociation energy , collision induced dissociation , ground state , tandem mass spectrometry , nuclear magnetic resonance , physics , organic chemistry , chromatography , quantum mechanics
Translational energy spectrometry (TES) and collision‐induced dissociation (CID) experiments on the singly charged ions, CH 2 CI 2 + ˙, CH 2 Br 2 + ˙ and CH 2 I 2 + ˙ have been performed on a double‐focusing mass spectrometer. No TES peaks could be seen from CH 2 CI 2 + ˙ due to inadequate sensitivity. The measured energies of a number of non‐dissociative electronic states of the incident ions of CH 2 ID 2 + ˙ and CH 2 Br 2 + ˙ are in agreement with energies reported by photoelectron spectroscopy. The latter technique indicates the presence of a weak band in the photoelectron spectrum kof CH 2 Br 2 lying 8.4–9.4eV above its ground state. This band is evident in the TES spectrum of CH 2 Br 2 + ˙ incident ions. Other electronic ststes are also observed and tentatively assigned.