77026-97-2Relevant academic research and scientific papers
Reversible CO2 fixation by iridium(I) complexes containing Me2PhP as ligand
Langer, Jens,Imhof, Wolfgang,Fabra, Maria Jose,Garcia-Orduna, Pilar,Goerls, Helmar,Lahoz, Fernando J.,Oro, Luis A.,Westerhausen, Matthias
, p. 1642 - 1651 (2010/06/14)
The iridium(I) complexes [IrCl(Me2PhP)3] (1), [Ir(Me2PhP)4]Cl (2), [Ir(Me2PhP)4]I (3), and [Ir(Me2PhP)4]PF6 (4) are prepared from the iridium(I) precursors
MODIFICATION OF THE ACID-BASE PROPERTIES OF HYDROXYCARBONYL COMPLEXES OF IRIDIUM(III) BY SUBSTITUTION OF CARBON MONOXIDE BY A TERTIARY PHOSPHINE LIGAND
Deeming, Antony J.,Proud, Graeme P.
, p. 385 - 390 (2007/10/02)
A dichloromethane solution of the cationic carbonyl complex (IrCl2(CO)(PMe2Ph)3)(ClO4) reacts with aqueous KOH to give (IrCl2(CO2H)(PMe2Ph)3) which has been characterised spectroscopically.This CO2H compound is very much more basic and very much less acidic than (IrCl2(CO2H)(CO)(PMe2Ph)2).Tertiary amines will not deprotonate (IrCl2(CO2H)(PMe2Ph)3) while Li(N(SiMe3)2) leads to decarboxylation products trans, mer- and cis, mer-(IrHCl2(PMe2Ph)3).The mechanisms of these reactions are considered and the hydroxycarbonyl complex is compared with its formato isomer which decarboxylates much less readily.
