Divalent Ytterbium Boratabenzene Complex (C<sub>5</sub>H<sub>5</sub>BNPh<sub>2</sub>)<sub>2</sub>Yb(THF)<sub>2</sub>: Synthesis, Structure, and Solvent-Mediated Redox Transformation

The boratabenzene derivative of divalent ytterbium complex (C<sub>5</sub>H<sub>5</sub>BNPh<sub>2</sub>)<sub>2</sub>Yb(THF)<sub>2</sub> (<b>1</b>) was synthesized and characterized. Reaction of <b>1</b> with α-diimine PhNC(Me)C(Me)NPh in toluene afforded a trivalent ytterbium complex, [C<sub>5</sub>H<sub>5</sub>BNPh<sub>2</sub>]<sub>2</sub>Yb[PhNC(Me)C(Me)NPh] (<b>2</b>), which was characterized by single-crystal X-ray diffraction. The redox process is solvent sensitive and reversible.