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室温下 ,用 Cp2 Zr Cl2 与 Li C≡ CPh反应 ,合成了碳碳偶合反应的 Zr( )阴离子中间体Li[Cp2 Zr( C≡ CPh) (η2 :1 ,2 -Ph C2 C≡ CPh) ].用元素分析、核磁共振谱和红外光谱对配合物进行了表征 ,配合物的晶体结构分析给出了两个炔烃之间碳碳偶合的证据 .用核磁共振谱初步探讨了合成反应机理
At room temperature, Zr () anion intermediate Li [Cp2 Zr (C≡CPh) (η2: 1, 2 -Ph C2 C≡CPh)] was synthesized by the reaction of Cp2 Zr Cl2 and Li C≡Cph The complex was characterized by elemental analysis, nuclear magnetic resonance and infrared spectroscopy, and the crystal structure analysis of the complex gave evidence of carbon-carbon coupling between the two alkynes. The reaction mechanism