Dp. Paterniti et al., SOLVENT EFFECT FOR OXIDATIVE ADDITION OF HYDROGEN IN SOLVENTS FROM TOLUENE TO WATER - REACTION OF H-2 WITH TRANS-[IR(CO)CL(PPH(2)(C6H4SO3K-M))(2)], Chemical communications, (23), 1996, pp. 2659-2660
A significant enhancement in the rate of oxidative addition of H-2 to
square-planar iridium(II) complexes in water is observed; kinetic stud
ies of the addition of H-2 to trans-[Ir(CO)Cl(PPh(3))(2)] in toluene a
nd of H-2 to trans-[Ir-(CO)Cl{PPh(2)(C6H4SO3K-m)}(2)] in water show a
factor of 45 increase in rate constant in water; this solvent effect i
s shown to be general for the solvents toluene, chlorobenzene, N,N-dim
ethylformamide, dimethyl sulfoxide and water, and has important ramifi
cations for catalysis in water.