La. Quijije et al., CATALYTIC-OXIDATION OF 1-HEXENE WITH MOLECULAR-OXYGEN BY IRIDIUM NITRO COMPLEXES, Reaction kinetics and catalysis letters, 62(2), 1997, pp. 251-256
The oxidation of 1-hexene by molecular oxygen catalyzed by iridium(III
) complexes, [Ir(CH3CN)(5-x)Cl-x(NO2)](2-x) (x = 0, 1, or 2) has been
studied in acetonitrile under P(O-2) = 1.5 atm and T = 100 degrees C.
[Ir(CH3CN)(5)(NO2)](PF6)(2) oxidizes 1-hexene to 1,2-epoxyhexane. Comp
lex [Ir(CH3CN)(4)Cl(NO2)]PF2 oxidizes 1-hexene to 2,3-epoxyhexane only
in the presence of [IPd(PhCN)(2)(Cl)(2)] (an olefin activator). In co
ntrast to the cationic complexes, the neutral complex [Ir(CH3CN)(4)Cl-
2(NO2)] oxidizes 1-hexene to 2-hexanone only in the presence of[Pd(PhC
N)(2)(Cl)(2)].