Popis: |
Oxidation of exo -substituted (cyclohexadienyl)cyclopentadienyliron derivatives, exo -RC 6 H 6 FeC 5 H 5 (R = C 2 H 5 , C 6 H 5 CH 2 or C 5 H 5 ), by (Ph 3 C)BF 4 or bromosuccinimide proceeds by either of two routes, exo -R abstraction or endo H abstraction. Mixtures of [C 6 H 6 FeC 5 H 5 ] + and [RC 6 H 5 FeC 5 H 5 ] + axe formed in the reactions. The tendency for R-abstraction rises along the series C 5 H 5 C 2 H 5 6 H 5 CH 2 . When heated, the compounds (arene H) FeC 5 H 5 axe transformed to ferrocene. |