The carbodiphosphorane-based iridium pincer complex (2) is demonstrated to rearrange in chlorinated organic solvents under cleavage of a P–C-bond to give a chelating phosphine ylide ligand. A detailed mechanistic investigation reveals that these types of donor groups are prone for P–C-bond cleavage in the coordination sphere of transition metal hydrido complexes. Finally, complex 2 is demonstrated
碳化
二膦基
铱钳夹复合物(2)被证明在
氯键裂解后在
氯化有机溶剂中重排,得到螯合的膦叶立德
配体。详细的机械研究表明,这些类型的供体基团在过渡
金属
氢化物络合物的配位域中很容易发生P-C键断裂。最后,证明配合物2是有效的氢借用催化剂。