Chromium(0)–rhodium(I) metal exchange: Synthesis and X-ray structure of new Fischer (NHC)carbene complexes of rhodium(I)

An easy approach to Fischer (NHC)carbene complexes of rhodium(I) 3 from methoxy- and aminocarbene complexes of chromium 1 and (NHC)(cod)RhCl (2) is described. The process involves the transfer of the carbene unit and a CO ligand from chromium to rhodium. The X-ray analysis is provided for 3d and the preliminary results on their thermal stability and reactivity toward alkynes and allenes are also reported.

A new type of metal carbene complex of group 9, specifically NHC/Fischer biscarbene complexes of rhodium(I), is synthesized and fully characterized. Preliminary results on their thermal stability and reactivity toward alkynes and allenes are also reported.Figure optionsDownload as PowerPoint slide