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Oxygenation of a Ruthenium Complex Bearing a PBP-Pincer Ligand Inducing the Formation of a Boronato Ligand with a Weak Ru–O Bond

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posted on 14.10.2013 by Takuma Miyada, Makoto Yamashita
A ruthenium hydride complex having a boron-containing PBP pincer ligand was synthesized. Oxygenation of this complex by using NMO formed the corresponding boronate complex with a nearly 90° B–O–Ru angle and a long Ru–O bond. A detailed structural and theoretical study revealed BO double-bond character and a very small contribution of a pπ–dπ interaction between Ru and O.