Cleavage of B−C bonds and Anion [PhBH3]− Formation in the Reaction of the Yb(II) Hydride Complex with BPh3

Abstract

The reaction of the amidinatehydride complex of divalent ytterbium [(Amd)Yb^II(μ²-H)]₂ (Amd is {tert-BuC(NC₆H₃-iso-Pr₂-2,6)₂}) with BPh₃ proceeds with the cleavage of the B−C bonds and affords the Yb(II)[(Amd)Yb^II(μ²-H₃BPh)]₂ complex containing the phenyltrihydroborate anion [PhBH₃]⁻. The X-ray diffraction analysis (СIF file CCDC no. 1902290) shows that the [PhBH₃]⁻ anions in the complex are bridging. The “nonclassical” κ¹-amido-η⁶-arene coordination mode to the Yb²⁺ ion is retained for the amidinate ligand.