Methoxide abstraction from gold acetylide complexes of the form (L)Au[η¹‐C≡CC(OMe)ArAr′] (L=IPr, P(^tBu)₂(ortho‐biphenyl); Ar/Ar′=C₆H₄X where X=H, Cl, Me, OMe) with trimethylsilyl trifluoromethanesulfonate (TMSOTf) at −78 °C resulted in the formation of the corresponding cationic gold diarylallenylidene complexes [(L)Au=C=C=CArAr′]⁺ OTf⁻ in ≥85±5 % yield according to ¹H NMR analysis. ¹³C NMR and IR spectroscopic analysis of these complexes established the arene‐dependent delocalization of positive charge on both the C1 and C3 allenylidene carbon atoms. The diphenylallenylidene complex [(IPr)Au=C=C=CPh₂]⁺ OTf⁻ reacted with heteroatom nucleophiles at the allenylidene C1 and/or C3 carbon atom.

中文翻译：

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阳离子金二芳基亚烯基亚烷基络合物的合成，表征和反应活性

由Au [η形式（L）的金络合物乙炔化甲醇抽象¹ -C≡CC（OME）Arar的']（L =的IPr，P（^吨丁基）₂（邻= C;氩气/氩-联苯基）' ₆ H ₄ X，其中X = H，Cl，Me，OMe）与三甲基甲硅烷基三氟甲磺酸盐（TMSOTf）在-78°C形成相应的阳离子金二芳基亚芳基亚烷基络合物[（L）Au = C = C = CArAr'] ⁺ 光学传递函数^-在≥85±5％的产率，根据^1点H NMR分析。¹³这些络合物的13 C NMR和IR光谱分析确定了C1和C3烯基亚碳原子上正电荷的芳烃依赖性离域。所述diphenylallenylidene配合物[（IPR）的Au = C = C =器CPh ₂ ] ⁺ 光学传递函数^-反应用亲核试剂的杂原子在allenylidene C1和/或C3碳原子上。