Synthesis and characterization of new pentamethylcyclopentadienyl iridium hydride complexes
DATE:
2012-09-15
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/7406
EDITED VERSION: https://linkinghub.elsevier.com/retrieve/pii/S0022328X12003191
UNESCO SUBJECT: 2303.21 Compuestos Organometálicos
DOCUMENT TYPE: article
ABSTRACT
Pentamethylcyclopentadienyl iridium dihydride complexes [Cp*Ir(H)2(PR3)]; (PR3 = PPh2Me, PTA) were prepared by reaction of [Cp*IrCl2(PPh2Me)] and [Cp*IrCl2(PTA)], respectively, with an excess of sodium bis(2-methoxyethoxy)aluminium hydride (Red-Al). Protonation of the dihydride [Cp*Ir(H)2(PPh2Me)] with HBF4·Et2O at low temperature gave the classical trihydride complex [Cp*Ir(H)3(PPh2Me)]BF4 that displays quantum mechanical exchange coupling. Reaction of [Cp*IrCl2(PPh2Me)] with CO gave the half-sandwich iridium carbonyl compound [Cp*IrCl(CO)(PPh2Me)]Cl which, by reaction with NaBPh4, yielded yellow microcrystals of [Cp*IrCl(PPh2Me)(CO)]BPh4 adequate for X-ray diffraction analysis.
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