Structure and reactivity of cis- and trans-bis-[{5-carbomethoxy-(1,2,3-η)-cyclohexenyl}palladium]. Evidence for a (σ-allyl)palladium intermediate in the cis-migration of acetate from palladium to coordinated π-allyl
作者:Helena Grennberg、Vratislav Langer、Jan-E. Bäckvall
DOI:10.1039/c39910001190
日期:——
The mode of attack by acetate on a (π-allyl)palladium complex depends not only on the ligands on palladium, but also on the structure of the complexes; for the bis-[5-carbomethoxy-(1,2,3-η3)-cyclohexenyl}palladium] complexes, the structures of which were determined by X-ray crystallography and NMR spectroscopy, the cis isomer preferably reacted by external attack whereas the trans isomer, under identical
乙酸盐对(π-烯丙基)钯配合物的攻击方式不仅取决于钯上的配体,而且取决于配合物的结构。对于双- [5-甲酯基(1,2,3-η 3)环己烯基}钯]络合物,其中通过X射线晶体学和NMR光谱法测定的结构中,顺式异构体优选由外部的攻击反应而在相同条件下,反式异构体则倾向于内部迁移。