期刊
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
卷 649, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/zaac.202300025
关键词
iridium; N-heterocyclic carbenes; arsenic; arsinidenes; phosphinidenes
Half-sandwich iridium complexes of [(eta(5)-C5Me5){(NHC)E}IrCl] (E=P, As) were synthesized using N-heterocyclic carbene (NHC) adducts of (IDipp)ESiMe3 and (IMes)ESiMe3 with [(eta(5)-C5Me5)IrCl2](2). The X-ray diffraction analysis of [(eta(5)-C5Me5){(IDipp)As}IrCl] confirmed its molecular structure, revealing the first structurally authenticated NHC-arsinidenide complex with a shorter Ir-As bond length and significant metal-arsenic pi-interaction, as supported by theoretical calculations.
Half-sandwich iridium complexes of the type [(eta(5)-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 [(eta(5)-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 [(eta(5)-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 pi-interaction as also confirmed by theoretical calculations.
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