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Insertion of an Osmium Nitride into Boron−Carbon Bonds

When arylboranes react with the osmium(VI) nitrido complex [{HB(pz)3}Os(N)Cl2], they do not just bind to the nitrogen atom. A B−C bond is cleaved, and the phenyl and boryl units are separately bound to nitrogen in the product (e.g. 1; X=Ph; Y=Ph, OBPh2). Subsequent hydrolysis leads to cleavage of the B−N bond and generation of the anilido species [{HB(pz)3}Os(NHPh)Cl2]. pz=pyrazolyl.