Dinuclear Di(N-heterocyclic carbene) Iridium(III) Complexes as Catalysts in Transfer Hydrogenation

作者：Volpe Andrea; Baldino Salvatore; Tubaro Cristina^*; Baratta Walter; Basato Marino; Graiff Claudia

来源：European Journal of Inorganic Chemistry, 2016, 2016(2): 247-251.

DOI：10.1002/ejic.201501027

• Iridium
• Di(NHC) complexes
• Hydrogenation
• Metalation
• Dinuclear complexes

Two novel di(N-heterocyclic carbene) complexes of formula (-PyrIm-CH2-ImPyr)[IrCp*Cl](2)(PF6)(2) (1) and -MeIm-CH2(p-C6H2)CH2-ImMe[IrCp*Cl](2) (2) (Im = imidazol-2-ylidene) have been synthesised by transmetallation of the dicarbene ligand from the corresponding dicarbene silver complex, using [IrCp*(-Cl)Cl](2) as an iridium precursor. The structure of complex 2 has been determined by X-ray diffraction and is characterized by a double ortho-metallation of the p-xylylene bridge between the carbene units. Both complexes show good activity in the transfer hydrogenation of ketones to alcohols in 2-propanol.

• 出版日期2016-1