Abstract
In a search for better methods of preparaing carbonyl compounds of the transition metals the reaction of powdered iridium with carbon monoxide and chlorine under various conditions has been studied. The outcome of the reaction depends on the CO/Cl 2 ratio and on the temperature. The iridium(II) complex Ir(CO) 2Cl (I) has been isolated, and its reactions with CO, AsPh 4Cl, PPh 3 and Cl − ions examined. The anion (IrCOCl 4) − has been isolated as its caesium and bis-triphenyl-phosphine)iminium salts, and the complex Ir 2(CO) 4Cl 6 has been identified by mass spectrometry.
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