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Chemical ionization of ethylene dibromide with ammonia gas
Author(s) -
Cairns Thomas,
Siegmund Emil G.
Publication year - 1985
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.1210200113
Subject(s) - reagent , carbonium ion , chemistry , ammonia , ethylene , chemical ionization , intramolecular force , nucleophile , ionization , ion , nucleophilic substitution , hydrogen , inorganic chemistry , photochemistry , ethylene dibromide , organic chemistry , catalysis , toxicology , biology
Abstract Under ammonia chemical ionization conditions, a fragment ion of ethylene dibromide undergoes a nucleophilic substitution reaction which is demostrated to be highly pressure‐dependent upon the reagent gas concentration. This reaction is strongly influenced by the stability of the intermediate carbonium ion and the ability of the substituted product ion to be stabilized by intramolecular hydrogen bonding.