PCBr complexes of the tervalent metals require a two-electron reduction step prior to the ortho-metallation reaction. Most intermediates were characterized by chemical and spectroscopic analysis. Two intermediates of general formula IrX2(η2-PC)(η-PCBr), [PC = P(C6F4)(C6H5)2] (X = Cl, 5, X = Br, 6), were characterized by a single crystal analysis. 5 crystallizes in the monoclinic space group P21/n with
摘要提出了rh和ir配合物与邻
溴芳基膦PCBr [PCBr = P(o-Br )(
C6H5)2]反应的比较研究。Ir(I)和Rh(I)的各种PCBr配合物都会将
金属原子快速插入CBr键中,前提是膦以η2-模式(Pbr)配位。如果Br配位被高级
配体如CO或烯烃取代,则在正常条件下不会发生反应。三价
金属的PCBr配合物在原
金属化反应之前需要进行两个电子还原步骤。大多数中间体通过
化学和光谱分析表征。通过单晶分析表征了两种通式为IrX2(η2-PC)(η-PCBr)的中间体[PC = P(
C6F4)( )2](X = Cl,5,X = Br,6)。 。