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Novel Synthesis and Crystal Structure of Benzyloxy-Bis-Pentafluorophenylborane

Hailey Beal, Lev Zakharov, Eric R Abbey

The title compound, C₁₉H₇BF₁₀O, was formed by the reaction of pentafluorophenylmagnesium bromide with in situ generated benzyldichloroborane, followed by exposure to molecular oxygen, resulting in an oxygen insertion reaction into the C-B bond. The molecule features a trigonal planar boron, with containing a B-O bond with significant double bond character. A weak hydrogen bond between H7 and O is observed, resulting in an S (5) ring. In the structure, weak π-π interactions between the phenyl and pentafluorophenyl rings form chains along the [100] axis.