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Reactions of Fe+n clusters (n = 2–11) with C6H6 and C6D6. Ligand isomerization in the benzene precursor ion Fe4(C2H2)+3

✍ Scribed by Oliver Gehret; Manfred P. Irion

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
377 KB
Volume
254
Category
Article
ISSN
0009-2614

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✦ Synopsis

Even though Fe~ clusters in the gas phase have been demonstrated to be able to induce the cylotrimerization of added C2H 2 ligands to benzene, the precursor ion Fe4(CzH2) ~ has not yet been structurally characterized. To improve our understanding of this type of ion, we compare the products obtained by the direct reaction of benzene with bare Fe~ clusters (n = 2-11) to those obtained by dehydrogenative addition of ethene. Additional mass spectrometric studies such as collision-induced dissociation (CID) and thermoneutral ligand exchange with C6D 6 suggest that the reaction of Cell 4 with Fe~ produces at least two types of structural isomers, with a preformed benzene molecule existing only in one of them (Fe4C6H~-).

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