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Tetramethylsilane Chemical Ionization Mass Spectrometry of Mono‐substituted Aromatic Compounds: Gas‐phase Trimethylsilylation
Author(s) -
Srinivas R.,
Rama Devi A.,
Viswanadha Rao G. K.
Publication year - 1996
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/(sici)1097-0231(19960115)10:1<12::aid-rcm426>3.0.co;2-4
Subject(s) - chemistry , tetramethylsilane , fluorobenzene , iodobenzene , chemical ionization , adduct , mass spectrometry , ion , dissociation (chemistry) , electron ionization , mass spectrum , fragmentation (computing) , halocarbon , ionization , analytical chemistry (journal) , benzene , organic chemistry , chromatography , catalysis , operating system , computer science
The tetramethylsilane (TMS) chemical ionization (CI) spectra of the mono‐substituted aromatics studied contain M +· and adduct [M+(CH 3 ) 3 Si] + ions. Abundant M +· ions are observed in compounds with electrondonating groups and are attributed to charge‐exchange reactions of reactant ions in the TMS CI plasma. The stability of adduct ions in the halobenzenes was found to increase from fluorobenzene to iodobenzene. A collision‐induced dissociation study of the [M+(CH 3 ) 3 Si] + ions of these compounds has been carried out to gain an insight into the site of adduction