structures for the analysis of ring distortions as well as a systematic variation of X in order to evaluate the trans influence felt by opposite sides of the cyclopentadienyl ring. Major advances include demonstration that Cp can reduce its electron donation to a metal without “slipping”, the rational analysis of cyclopentadienyl distortions, and a well-supported trans-influence series for cyclopentadienylmetal
从有用的起始材料 Cp*Ni(PEt3)(acac) 开始,Cp*Ni(PEt3)Me 和 Cp*Ni(PEt3)Br 的合成已经完成。Cp*Ni(PEt3)X (X = Br, O(p-C6H4Me), NH(p-C6H4Me), S(p-C6H4Me), OCH3, Me, CH2Ph, H, PEt3+)的X射线晶体结构已经确定,提供了大量类似结构的样本,用于分析环扭曲以及 X 的系统变化,以评估
环戊二烯基环相对侧感受到的反式影响。主要进展包括证明 Cp 可以在不“滑动”的情况下减少其对
金属的电子捐赠,
环戊二烯基畸变的合理分析,以及得到充分支持的
环戊二烯基
金属配合物的反式影响系列。总之,d8 Cp*Ni
L2 复合物在键长、结合几何形状、