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Reactive Collisions in Quadrupole Cells. 7: Characterization of C5H8 Isomers by Reaction with Metal Ions

โœ Scribed by Jinsong Ni; Alex G. Harrison

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
448 KB
Volume
10
Category
Article
ISSN
0951-4198

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โœฆ Synopsis

The reactions of the singly charged transition metal ions Sc+ through Cu' with six acyclic C5H, isomers have been studied. The metal ions, produced by fast-atom bombardment of the solid metal chlorides, were mass-selected by the BE stage of a hybrid BEqQ mass spectrometer and introduced at low incident ion energies into the quadrupole collision cell to react with the neutral C,H, compound in the cell. The reaction products were analyzed by scanning the final quadrupole. Cr', Mn', Ni+ and Cu' reacted primarily by clustering to give C,H,M+ and (C,H,),M+ ions. Fe' and Co' showed both cluster ions and low yields of metal-containing fragment ions. Sc+, Ti' and V' showed a high reactivity with the C5Hs isomers and gave a variety of products ranging from CH4M+, C,H,M', C,H,M+ and C , W + to higher-mass products resulting from further reactions of these primary products. These latter three metal ions give distinctly different spectra with each of the C,H, isomers 1-pentyne, 2-pentyne, l&pentadiene, lP-pentadiene, 2-methyl-l,3-butadiene and 3-methyl-1,2-butadiene, thus allowing the isomers to be differentiated.

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