Abstract
Cluster Grignard reagents C 6H 5Mg 4F have been obtained by direct magnesium cluster insertion into C–F bond in fluorobenzene with magnesium vapors co-condensates at low temperature. The appearance of metal cluster in organomagnesium molecule leads to unusual non-transition metal cluster compounds catalytic properties studied on halogen exchange reaction RF+R′Cl→RCl+R′F as example. Cluster Grignard reagents catalyze the fluorobenzene reaction with alkyl chlorides due to reversible magnesium cluster insertion into C–F and C–Cl bonds.
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