103564-38-1Relevant academic research and scientific papers
SYNTHESIS OF NEW ORTHOMETALLATED IRIDIUM(III) COMPOUNDS BY CHEMICAL AND ELECTROCHEMICAL METHODS
Lahuerta, P.,Latorre, J.,Solana, I.
, p. 377 - 384 (2007/10/02)
Replacement of one phosphine ligand in IrCl3(η2-PCBr)(η1-PCBr) (1) (PCBr=P(o-BrC6F4)Ph2), by various P-donor ligands has given compounds of stoichiometry IrCl3(η2-PCBr)L (3: L=PMePh2; 4: L=P(p-MeC6H4)3; 5: L=P(OMe)3, 6: L=P(OPh)3).All of these show two irrevesible reduction peaks in the range -1.1, -1.3 and ca. -2.0 V.The electrochemical reduction of compound 1 at -1.5 V (at deg C) leads to a very reactive iridium(I) species, probably IrCl(PCBr)2, which undergoes intramolecular orthomettallation at room temperature.Three compounds are obtained as the results of this chemical conversion: IrBr2(PC)(PCBr) (7), IrCl2(PC)(PCBr) (8) and (as a mixture of isomers) IrClBr(PC)(PCBr) (9) (PC=P(C6F4)Ph2).The different behavior of rhodium and iridium complexes in these reactions are discussed.
