Photoswitchable N-Heterocyclic Carbenes: Using Light to Modulate Electron-Donating Properties
作者:Bethany M. Neilson、Vincent M. Lynch、Christopher W. Bielawski
DOI:10.1002/anie.201105032
日期:2011.10.24
Ligands in the limelight: Light was used to change the electron‐donating properties of an N‐heterocyclic carbene (NHC) moiety within chalcogen and metal adducts. Photoinduced electrocyclic ring closure of a photochromic 4,5‐dithienylimidazolone increased its νCO frequency. Likewise, UV irradiation of an analogous photochromic [(NHC)Ir(CO)2Cl] complex decreased the carbene's electron‐donating ability