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Substitution reactions in the secondary ion mass spectrometry of N ‐methylpyridinium halides
Author(s) -
Yoneda Michiaki,
Tanizaki Ken,
Tsujimoto Kazuo,
Ohashi Mamoru
Publication year - 1993
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.1210280607
Subject(s) - chemistry , ion , halide , halogen , mass spectrometry , pyridinium , mass spectrum , cluster (spacecraft) , deuterium , medicinal chemistry , inorganic chemistry , analytical chemistry (journal) , organic chemistry , alkyl , atomic physics , physics , chromatography , computer science , programming language
Secondary ion mass spectra of N ‐methylpyridinium halides (C + X − , where C + is a pyridinium cation and X − is a halogen anion) exhibit the C + ions, a series of cluster ions ((C + ) n (X − ) n –1 ) and, furthermore, remarkable [CX – R] + ions (R = H or Me). The mechanism of the formation of [CX – R] + ions was investigated by the use of deuterated compounds and B/E and B 2 / E constant linked‐scan measurements. A possible explanation is proposed in which the ions are produced through substitution reactions between species constituting the C 2 X + cluster ions in the gas phase.