1421763-39-4Relevant academic research and scientific papers
Reactions of Cp Ir(CO)2 with pentafluorobenzonitrile: Half-sandwich iridium complexes Cp Ir(CO)(p-C6F4CN)(X)
Mak, Kar Hang Garvin,Chan, Pek Ke,Fan, Wai Yip,Leong, Weng Kee,Li, Yongxin
, p. 176 - 180 (2013/10/01)
The reaction of Cp*Ir(CO)2 (1) with pentafluorobenzontrile in the presence of a base afforded the diaryl complex Cp*Ir(CO)(p-C 6F4CN)2 (4). The reaction proceeds via the metallacarboxylic acid Cp*Ir(CO)(p- C6F4CN)(COOH) (2). The latter can be decarboxylated in the presence of a base to the hydrido species Cp*Ir(CO)(p-C6F4CN)(H) (5), which can then undergo hydrideechloride exchange to Cp*Ir(CO)(p-C6F 4CN)(Cl) (6a). In the presence of air and water, the reaction of 1 with pentafluorobenzontrile afforded a complex formulated as Cp*Ir(CO)(p-C6F4CN){C(OH)(NH2)C 6F5} (7a); this is also available from the reaction of 2 with pentafluorobenzamide in the presence of aqueous NaOH.
Photochemical reaction of CpIr(CO)2 with C6F 5X (X = CN, F): Formation of diiridium(II) complexes
Mak, Kar Hang Garvin,Chan, Pek Ke,Fan, Wai Yip,Ganguly, Rakesh,Leong, Weng Kee
, p. 1053 - 1059 (2013/04/23)
Visible light irradiation of CpIr(CO)2 (1) in pentafluorobenzontrile resulted in the formation of the two isomeric diiridium(II) complexes [CpIr(μ-CO)(C6F4CN)] 2 (3) and [CpIr(CO)(C6F4CN)]2 (4), while the analogous reaction of 1 in hexafluorobenzene to give [CpIr(μ-CO)(C6F5)]2 (3a) required UV irradiation. Complex 4 isomerizes to 3 under visible light irradiation. A reaction pathway to 4 involving aromatic nucleophilic substitution has been proposed on the basis of experimental and computational data. The isomerization of 4 to 3 is believed to proceed via a radical species resulting from homolytic fission of the Ir-Ir bond.
