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The title complex, IrCl(bdpp) (1), where bdpp = PhP[(CH 2 ) 3 PPh 2 ] 2 , has been obtained from [IrCl(C 8 H 14 ) 2 ] 2  and the triphosphine ligand. Characteristic  31 P NMR data of 1 dissolved in THF are δ(P̲Ph 2 ) = 2.7 and δ(P̲Ph) = - 19.9 with cis- 2 J(P̲IrP̲) = 32.8 Hz. Reaction of 1 with CO proceeds stepwise to yield five-coordinate IrCl(CO)(bdpp) (2) and ionic [Ir(CO) 2 (bdpp)]Cl (3). A trigonal bipyramidal geometry with equatorial CO ligands is assigned to the cation of 3 on the basis of its v(CO) infrared intensities. When allowed to react with HCl, 1 gives the monohydride IrHCl 2 (bdpp) (4). Similarly, the dihydride IrH 2 Cl(bdpp) (5) is formed from 1 and H 2 . As has been established by IR and NMR spectroscopy, 4 and 5 adopt cis-mer-octahedral structures.

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Oligophosphin-Liganden, III [1] Bis(3-diphenylphosphinopropyl)phenylphospbinchloroiridium(I) * * und dessen Carbonyl-und Hydridderivate / Oligophosphine Ligands, III [1] Bis(3-diphenylphosphinopropyl)phenylphosphinechloroiridium(I) and its Carbonyl and Hydride Derivatives