Abstract
AbstractHalf‐sandwich iridium complexes of the type [(η5‐C5Me5){(NHC)E}IrCl] (E=P, As) were prepared by the reactions of N‐heterocyclic carbene (NHC) adducts of trimethylsilylphosphinidene and trimethylsilylarsinidene, (IDipp)ESiMe3 and (IMes)ESiMe3, with [(η5‐C5Me5)IrCl2]2 (IDipp=bis(2,6‐diisopropylphenyl)imidazolin‐2‐ylidene; IMes=1,3‐bis(2,4,6‐trimethylphenyl)imidazolin‐2‐ylidene). The molecular structure of [(η5‐C5Me5){(IDipp)As}IrCl] was established by X‐ray diffraction analysis, affording the first structurally authenticated NHC‐arsinidenide complex with a short Ir−As bond length that reveals a significant degree of metal‐arsenic π‐interaction as also confirmed by theoretical calculations.
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