Abstract

Abstract The anionic tungsten dinitrogen complex trans-[NBu4][W(NCS)(N2)(dppe)2] reacted with primary and secondary boranes to give the corresponding boryldiazenido complexes, among which trans-[W(NCS)(N=NBHCMe2CHMe2)(dppe)2] was structurally determined. A related boryldiazenido complex was also obtained by the reaction of trans-[W(N2)2(dppe)2] with 9-borabicyclo[3.3.1]nonyl trifluoromethanesulfonate. These reactions provide the first examples of boration of coordinated dinitrogen.

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