Reaction of V(C<sub>6</sub>H<sub>6</sub>)<sub>2</sub> with the Borane Adducts of Malononitrile\n[(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>B·NCCH<sub>2</sub>CN·B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>] and Water [H<sub>2</sub>O·B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>]
Robert Choukroun (2414704)Christian Lorber (736495)Laure Vendier (1347666)
Abstract
Reaction of malononitrile, NCCH<sub>2</sub>CN, with V(C<sub>6</sub>H<sub>6</sub>)<sub>2</sub>\nin toluene in the presence of 2 equiv of B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub> afforded the\nvanadium(I) complex [V(C<sub>6</sub>H<sub>5</sub>Me)<sub>2</sub>][(F<sub>5</sub>C<sub>6</sub>)<sub>3</sub>B·NCCHCN·B-(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>], in which deprotonation of the malononitrile ligand\nand arene exchange at the vanadium center have occurred. In\nthe absence of malononitrile, a redox reaction was observed\nbetween V(C<sub>6</sub>H<sub>6</sub>)<sub>2</sub> and the water adduct H<sub>2</sub>O·B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>, which\ngave the vanadium(I) complex [V(C<sub>6</sub>H<sub>6</sub>)<sub>2</sub>][(F<sub>5</sub>C<sub>6</sub>)<sub>3</sub>BOB(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>].
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