[(CO)Ni(PPh2CH2CH2)3SiMe}] (6), and [Ph3PNi(PPh2CH2CH2)3SiMe}] (7), as well as the bidentate complex [(CO)2Ni(PPh2CH2)2CMeCH2PPh2}] (3) and the heterobimetallic complex [(CO)2Ni(PPh2CH2)2CMeCH2Ph2PAuCl}] (4), have been synthesized and fully characterized in solution. All 1H and 13C NMR signal assignments are based on 2D‐NMR methods. Single crystal X‐ray structures have been obtained for all complexes. Their
三齿螯合
镍配合物[(CO)Ni (PPh 2 CH 2)3 CMe}](2),[(CO)Ni (PPh 2 CH 2 CH 2)3 SiMe}](6)和[Ph 3
PNi (PPh 2 CH 2 CH 2)3 SiMe}](7)以及双齿络合物[(CO)2 Ni (PPh 2 CH 2)2 CMeCH 2 PPh 2 }](3)和异双
金属配合物[(CO)2Ni (PPh 2 CH 2)2 CMeCH 2 Ph 2 PAuCl}](4)已合成并在溶液中充分表征。所有1 H和13 C NMR信号分配均基于2D-NMR方法。已为所有配合物获得了单晶X射线结构。记录了它们的31 P CP / MAS(具有魔角旋转的交叉极化)NMR光谱,并鉴定了各向同性的谱线。借助信号的
化学位移各向异性(CSA)数据对信号进行分配。已经测试了所有配合物对于苯基
乙炔的环三聚反应的催化活性。情结2 –图4显示低