Electron ionization mass spectra of 2- and 4-chloro- and bromo-substituted diphenylamines

Eur. J. Mass Spectrom. 8, 17–19 (2002)
DOI: 10.1255/ejms.468

Electron ionization mass spectra of 2- and 4-chloro- and bromo-substituted diphenylamines

A.M. Hassan Rezk and Kh.A. Sife- Eldeen
National Centre for Radiation Research and Technology, Nasr City, Cairo, Egypt
M.A. Rabbih and Ezzat T.M. Selim^*
Atomic and Molecular Physics Unit, Nuclear Physics Department, NRC, Atomic Energy Authority, Cairo 13759, Egypt

ABSTRACT:

The electron ionization mass spectra of 2- and 4- chlorodiphenylamine and 2- and 4-bromodiphenylamine are reported. All the spectra are characterized by strong molecular ion signals, corresponding to the base peak. Two primary fragmentations of significance include the expulsion of the substituents X and HX (X = halogen) from the four compounds. Further dissociation of the primary fragment ions results in the formation of some secondary decomposition ions having low or negligible relative abundances.

Keywords: chlorodiphenylamine, bromodiphenylamine, electron impact mass spectra, fragmentation

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