18827-81-1Relevant articles and documents
A new convenient method for the high-yield synthesis of Ir4(CO)12
Pruchnik, F. P.,Wajda-Hermanowicz, K.,Koralewicz, M.
, p. 381 - 383 (1990)
The complex Ir4(CO)12 has been prepared by a new, simple method, involving heating of solutions of IrIII or IrIV chlorides in 98percent formic acid.Reaction at 100 deg C gave pure Ir4(CO)12 in 100percent yield.
Intra- and intermolecular C-H activation by bis(phenolate) pyridineiridium(III) complexes
Fu, Ross,Bercaw, John E.,Labinger, Jay A.
, p. 6751 - 6765 (2012/02/05)
A bis(phenolate)pyridine pincer ligand (henceforth abbreviated as ONO) has been employed to support a variety of iridium complexes in oxidation states I, III, and IV. Complexes (ONO)IrL2Me (L = PPh3, PEt 3) react with I2 to cleave the Ir-C bond and liberate MeI, apparently via a mechanism beginning with electron transfer to generate an intermediate Ir(IV) complex, which can be isolated and characterized for the case L = PEt3. The PPh3 complex is transformed in benzene at 65 °C to the corresponding phenyl complex, with loss of methane, and subsequently to a species resulting from metalation of a PPh3 ligand. Labeling and kinetics studies indicate that PPh3 is the initial site of C-H activation, even though the first observed product is that resulting from intermolecular benzene activation. C-H activation of acetonitrile has also been observed.
