Stable cis-dichloro- and cis-dimethylplatinum(II) complexes bearing bulky primary phosphines, such as BbtPH2 (Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl) and TbtPH2 (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl), were synthesized and isolated as stable compounds. The treatment of cis-[PtMe2(PH2Bbt)2] with lithium diisopropylamide (LDA) followed by the addition of an alkyl halide afforded the corresponding alkylated complexes, cis-[PtMe2(PHRBbt)(PH2Bbt)] (R=Me, Et, Bu, etc.). The spectroscopic observation of the intermediacy of the lithiated complex, cis-[PtMe2(PHLiBbt)(PH2Bbt)], has been accomplished.
带有大体积伯膦的稳定顺式二
氯和顺式二甲基
铂 (II) 配合物,例如 BbtPH2(Bbt = 2,6-双[双(三甲基
硅基)甲基]-4-[三(三甲基
硅基)甲基]苯基)和 TbtPH2 (Tbt = 2,4,6-三[双(三甲基甲
硅烷基)甲基]苯基),作为稳定的化合物被合成和分离。用
二异丙基氨基
锂 (
LDA) 处理顺式-[PtMe2(PH2Bbt)2],然后添加烷基卤化物,得到相应的烷基化络合物,顺式-[PtMe2(PHRBbt)(PH2Bbt)] (R=Me, Et,卜等)。已经完成了
锂化配合物顺式-[PtMe2(PHLiBbt)(PH2Bbt)]中间体的光谱观察。