[Ar = Ph (2a); Ar = ArF (2b)] in >90% yields. In these first examples of alkynyl(pincer)platinum(IV) complexes, the pincer group is present as a mer-[NCN]- tridentate donor and the alkynyl group is located cis to the pincer carbon donor, and the triflate (1a, 1b) and iodide groups (2a, 2b) are located trans to the pincer carbon; an X-ray structural analysis has been completed for 2b.
苯基(三甲基甲
硅烷基炔基)
碘(III)
三氟甲磺酸酯与 PtII(O2CAr)(NCN)(Ar = Ph,4-三
氟甲基苯基(ArF);NCN = [C6H3(CH2NMe2)2-2,6]) 在环境温度下反应得到溶液PtIV(O2CAr)(OTf)(CCSiMe3)(NCN) [Ar = Ph (1a); Ar = ArF (1b)]。将
碘化钠 (NaI) 添加到 1 导致分离出 PtIV(O2CAr)I(CCSiMe3)(NCN) [Ar = Ph (2a); Ar = ArF (2b)] 产率 >90%。在炔基(钳)
铂 (IV) 配合物的这些第一个例子中,钳基作为聚体-[NCN]-三齿供体存在,炔基位于钳碳供体的顺式,
三氟甲磺酸酯 (1a, 1b) ) 和
碘化物基团 (2a, 2b) 位于钳碳的反式;2b 的 X 射线结构分析已经完成。