Rhodium(III) Complexes Containing C4-Bound N-Heterocyclic Carbenes: Synthesis, Coordination Chemistry, and Catalytic Activity in Transfer Hydrogenation
作者:Liangru Yang、Anneke Krüger、Antonia Neels、Martin Albrecht
DOI:10.1021/om800110c
日期:2008.7.1
[RhCl(cod)]2 and KI afforded a series of new rhodium(III) complexes with abnormally C4-bound, cis-chelating NHC ligands. The complexes were isolated as dimetallic species containing two (μ2-I)3-bridged rhodium(III) centers. In the presence of coordinating ligands such as CH3CN, PPh3, or dppe, the dimeric structure is readily cleaved and yields monometallic complexes. Crystallographic analysis of representative