Iridium complexes of amphos (amphos = [PPh2CH2CH2NMe3+]I-): Crystal and molecular structures of trans-Ir(CO)(Cl)(PPh2CH2CH2NMe2)(2) and [trans-Ir(CO)(Cl)(PPh2CH2CH2NMe3)(2)(2+)][I-](2)center dot 2DMSO

An improved synthesis of a water-soluble phosphine ligand, PPh2(CH2CH2NMe3I-) amphos, is reported. Iridium complexes with amphos, trans-Ir(CO)X(ampho s)(2) (X = Cl, I), Ir(CO)(H) (amphos)(3) and Ir(CO)3(amphos): have been pre pared and examined for reactions with Hz and CO. Structures of trans-Ir(CO) (Cl)(PPh2CH2CH2NMe2)2 and [trans-Ir(CO)(Cl) (PPh2CH2CH2NMe3+)(2)][I-](2).2D MSO are compared to each other and to trans-Lr(CO)(Cl) (PPh3)(2). The ampho s ligand changes the solubility of iridium complexes, but does not markedly change the nature of the iridium center. Reactions show the effects of mor e polar solvents.