14353-90-3Relevant articles and documents
Catalytic reactivity of a meso-N-substituted corrole and evidence for a high-valent iron-oxo species
McGown, Amanda J.,Kerber, William D.,Fujii, Hiroshi,Goldberg, David P.
experimental part, p. 8040 - 8048 (2009/12/02)
It is shown that an iron(III) meso-N-substituted corrole (TBP 8Cz)FeIII (1) (TBP8Cz = octakis(4-tert- butylphenyl)corrolazinato), is a potent catalyst for the oxidation of alkenes in the presence of pentaflouroiodosylbenzene (C6F5IO)as oxidant. In the case of cyclohexene, complex 1 performs on a par wit h one of the best porphyrin catalysts ((TPPF20)FeCl), exhibiting rapid turnover and a high selectivity for epoxide (CzFeIII/C6F 5IO/cyclohexene (1:100:1000) in CH2Cl2/CH 3OH (3:1 v:v) gives 33 turnovers of epoxide in max = 440, 611, 747 nm) under single-turnover-like conditions at -78°C leads to the formation of a new dark-brown species (2) (λmax = 396, 732, 843 nm). The FeIII complex 1 is restored upon the addition of 2 equiv of ferrocene to 2, or by the addition of 1 equiv of PPh3, which concomitantly yields OPPh3. In addition, complex 2 reacts with excess cyclohexene at -42°C to give 1. Complex 2 was also characterized by EPR spectroscopy, and all of the data are consistent with 2 being an antiferromagnetically coupled iron(IV)-oxo ?-cation-radical complex. Rapid-mixing stopped-flow UV-vis studies show that the low-temperature complex 2 is generated as a short-lived intermediate at room temperature.
AROMATIC FLUORINE DERIVATIVES LXXXVII. GENERATION OF PENTAFLUOROPHENYLFLUOROIODONIUM ION
Bardin, V. V.,Furin, G. G.,Yakobson, G. G.
, p. 1288 - 1291 (2007/10/02)
The pentafluoroiodonium ion C6F5IF+ was generated by the action of antimony pentafluoride on pentafluorophenyliodine difluoride at -30 deg.C.For the case of the reaction with pentafluorobenzene it was shown that this cation is a stronger electrophilic agent than previously known iodonium salts RR'I+.Under the influence of fluorosulfonic acid iodosylpentafluorobenzene probably forms a complex of the donor-acceptor type.
