Substitution and Migratory Insertion Reactions of Square-Planar Allenylidene Iridium Complexes
作者:Kerstin Ilg、Helmut Werner
DOI:10.1021/om010353m
日期:2001.8.1
A series of (allenylidene)iridium(I) complexes of general composition trans-[IrXCCC(Ph)R}(PiPr3)2] [X = Br (5), I (6), NCO (7, 8), NCS (9, 10), OH (11, 12), N3 (13, 14)] was prepared from the corresponding chloro derivatives trans-[IrClCCC(Ph)R}(PiPr3)2] (3, 4) by salt metathesis. An X-ray crystal structure analysis of 4 (R = Ph) confirmed the almost linear arrangement of the Ir−C−C−C chain. The
一般组成的一系列(亚烯基)铱(I)配合物反式-[IrX C C C(Ph)R}(P i Pr 3)2 ] [X = Br(5),I(6),NCO(7,8),NCS(9,10),OH(11,12),N 3(13,14)的方法,由相应的氯的衍生物制备的反式- [的IrCl ç ç C(PH)R}(P我Pr 3)2 ](3,4)通过盐复分解。X射线晶体结构分析结果为4(R = Ph)证实了Ir-CC链的排列几乎是线性的。叠氮基化合物13(R = Ph)和14(R = t Bu)通过将亚烯基配体迁移插入Ir-N 3键与CO反应。R = t Bu(16)的反式-[Ir C≡C-CR(Ph)N 3 }(CO)(P i Pr 3)2 ]产物是热稳定的,而R = Ph(15)在苯中缓慢重排为金属化的丙烯腈衍生物通过消除N 2反式[[Ir C(CN)CPh 2 }(CO)(P i Pr 3)2