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Ion–Molecule Reactions of Halocarbon Cations with Polycyclic Aromatic Hydrocarbons in a Quadrupole Ion Trap Part I—Differentiation of Structural Isomers
Author(s) -
Mosi Andrew A.,
Cullen William R.,
Eigendorf Guenter K.
Publication year - 1997
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/(sici)1096-9888(199708)32:8<864::aid-jms545>3.0.co;2-i
Subject(s) - chemistry , halocarbon , structural isomer , chloroform , dichloromethane , adduct , ion , molecule , fluorobenzene , polyatomic ion , chemical ionization , photochemistry , medicinal chemistry , organic chemistry , benzene , ionization , solvent
Ion–molecule reactions between polycyclic aromatic hydrocarbons (PAHs) and ions (R + ) generated from halogenated hydrocarbons (dichloromethane, chloroform, carbon tetrachloride, 1,1‐dichloroethane, difluoromethane and 1,1‐difluoroethane) in a quadrupole ion trap were used to differentiate a series of structural isomers of PAHs. This differentiation was based on the formation of [M+R] + and [M+R‐HX] + products (X=Cl, F) between the halocarbon ions (R + ) and PAH molecules (M). Halomethanes were found to give rise predominantly to the elimination products [M+R‐HX] + , while the haloethanes also yielded significant amounts of the [M+R] + adducts. Differences in the ionization energies of the PAH isomers seem to be partially responsible for this differentiation process. Collision‐induced dissociation experiments also revealed structural differences in the adducts of different PAH isomers. © 1997 by John Wiley & Sons, Ltd.