Abstract
A reactivity study on a series of platinum boryl complexes was performed. The first stable base adducts of cationic haloboryl complexes of the form trans-[Pt{B(Br)(NMe2)}(NCMe)(PCy3)2]+ were isolated and fully characterized. The dianion [B12Cl12]2– was introduced as a weakly coordinating anion to complex chemistry forming a A2X salt. Through the reaction of trans-[Pt{B(Br)(tBu)}Br(PCy3)2] with BBr2tBu, the first highly soluble dinuclear platinum boryl complex, [Pt{B(Br)(tBu)}(μ-Br)(PCy3)]2, could be synthesized with concomitant buildup of the corresponding phosphine-borane adduct. In contrast to this observation, reaction of trans-[Pt{B(Br)(Mes)}Br(PCy3)2] with BBr3 leads to the formation of the cationic borylene complex trans-[Pt(BMes)Br(PCy3)2]+ by abstraction of the bromo ligand bound mutually trans to the boryl ligand in the precursor and concomitant buildup of [BBr4]−. Reaction of [Pt(PCy3)2] with BCl3 and subsequent abstraction of the platinum-bound chloro ligand enabled the structural characterizat...
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