New Insight into Reactions of Ni(S<sub>2</sub>C<sub>2</sub>(CF<sub>3</sub>)<sub>2</sub>)<sub>2</sub> with Simple Alkenes: Alkene Adduct versus Dihydrodithiin Product Selectivity Is Controlled by [Ni(S<sub>2</sub>C<sub>2</sub>(CF<sub>3</sub>)<sub>2</sub>)<sub>2</sub>]<sup>-</sup> Anion
作者:Daniel J. Harrison、Neilson Nguyen、Alan J. Lough、Ulrich Fekl
DOI:10.1021/ja063030w
日期:2006.8.1
The nickel bis(dithiolene) complex Ni(S2C2(CF3)2)2 employs its sulfur centers in reactions with alkenes, and stable interligand S-bonded alkene adducts can be formed. The present study shows that the selectivity of alkene binding to charge-neutral Ni(S2C2(CF3)2)2 is influenced by the anion [Ni(S2C2(CF3)2)2]-. In the absence of anion, formation of substituted dihydrodithiins (intraligand addition) dominates
镍双(二硫烯)配合物Ni(S2C2(CF3)2)2利用其硫中心与烯烃反应,可以形成稳定的配位S键烯烃加合物。本研究表明,烯烃与电荷中性 Ni(S2C2(CF3)2)2 结合的选择性受阴离子 [Ni(S2C2(CF3)2)2]- 的影响。在没有阴离子的情况下,取代的二氢二噻英(内配体加成)的形成占主导地位,而阴离子的存在允许形成稳定的配体间加合物。讨论了机械影响。展示了 Ni(S2C2(CF3)2)2 乙烯加合物的 X 射线晶体结构,显示了乙烯与双(二硫烯)复合物中硫中心的配位结合。