| Abstract: | Iridium(I) and Iridium(III) Complexes with Triisopropylarsane as Ligand The ethene complex trans‐[IrCl(C2H4)(AsiPr3)2] ( 2 ), which was prepared from [IrCl(C2H4)2]2 and AsiPr3, reacted with CO and Ph2CN2 by displacement of ethene to yield the substitution products trans‐[IrCl(L)(AsiPr3)2] ( 3 : L = CO; 4 : L = N2). UV irradiation of 2 in the presence of acetonitrile gave via intramolecular oxidative addition the hydrido(vinyl)iridium(III) compound [IrHCl(CH=CH2)(CH3CN)(AsiPr3)2] ( 5 ). The reaction of 2 with dihydrogen led under argon to the formation of the octahedral complex [IrH2Cl(C2H4)(AsiPr3)2] ( 7 ), whereas from 2 under 1 bar H2 the ethene‐free compound [IrH2Cl(AsiPr3)2] ( 6 ) was generated. Complex 6 reacted with ethene to afford 7 and with pyridine to give [IrH2Cl(py)(AsiPr3)2] ( 8 ). The mixed arsane(phosphane)iridium(I) compound [IrCl(C2H4)(PiPr3)(AsiPr3)] ( 11 ) was prepared either from the dinuclear complex [IrCl(C2H4)(PiPr3)]2 ( 9 ) and AsiPr3 or by ligand exchange from [IrCl(C2H4)(PiPr3)(SbiPr3)] ( 10 ) und triisopropylarsane. The molecular structure of 5 was determined by X‐ray crystallography. |
