Synthesis, structure and reactions of 1-(p-chlorophenyl)-3-(2,4,6-tri-t-butylphenyl)-1-aza-3-phospha-allene
作者:Xi-Geng Zhou、Li-Bei Zhang、Rui-Fang Cai、Qiang-Jin Wu、Lin-Hong Weng、Zu-En Huang
DOI:10.1016/s0022-328x(00)00281-3
日期:2000.6
A new phosphaazaallene Mes*PCNAr (Mes*=2,4,6-tBu3C6H2, Ar=p-ClC6H4) (1) has been synthesized. Complex 1 reacts with Mes*PHSiMe2tBu to form the phosphaazaallene insertion product Mes*PC(PHMes*)NAr(SiMe2tBu) (2). The treatment of 1 with an excess amount of YCl3 in THF leads to the isolation of the symmetrical dimer Mes*P(μ-CNAr)2PMes* (3), indicating both of the PC and CN bonds of 1 are reactive
合成了新的磷杂氮杂烯Mes *PCNAr(Mes * = 2,4,6- t Bu 3 C 6 H 2,Ar = p -ClC 6 H 4)(1)。配合物1与Mes * PHSiMe 2 t Bu反应形成磷杂氮杂烯基插入产物Mes *PC(PHMes *)NAr(SiMe 2 t Bu)(2)。用过量的YCl 3在THF中处理1导致分离对称的二聚体Mes * P(μ-CNAr)2 PMes *(3),表明1的PC和CN键是反应性位点。X射线结构分析1表示PC键的距离1.642(5)Å明显短于孤立的PC键(1.66-1.72Å)和NCP单元的距离PtheCN角为170.8(4)°时,线性略有偏离。的结构测定2揭示了分子采用约PC键和两个大体积的Mes *部分的相互取向的平面构象几乎是正交的(92.8°)。配合物3是对称的四元环结构,其中Mes *环几乎垂直于Ar环和P 2