X-ray Crystal Structures of Cp*Ni(PEt<sub>3</sub>)X [X = Br, O(<i>p</i>-C<sub>6</sub>H<sub>4</sub>Me), NH(<i>p</i>-C<sub>6</sub>H<sub>4</sub>Me), S(<i>p</i>-C<sub>6</sub>H<sub>4</sub>Me), OCH<sub>3</sub>, CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>, Me, H, PEt<sub>3</sub><sup>+</sup>]. Understanding Distortions and Trans Influences in Cyclopentadienyl Complexes
作者:Patrick L. Holland、Michael E. Smith、Richard A. Andersen、Robert G. Bergman
DOI:10.1021/ja971830o
日期:1997.12.1
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*NiL2 复合物在键长、结合几何形状、