Iridium trifluoromethanesulfonate

The typical in situ reduction of the precursor [lr(COD)Cl]2 by molecular hydrogen under the same reaction conditions have been also performed in 1-n-butyl-3-methylimidazolium trifluoromethanesulfonate (BMl-CFsSOs) and 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMl-BF [25]. The iridium nanoparticles prepared in BMTCF3SO3 and BM1-BF4 ILs, as previously observed with BM1-PF6, display irregular shapes with a monomodal size distribution (Figure 15.4). Mean diameters in the range of 2-3 nm were estimated with in situ TEM and small-angle X-ray scattering (SAXS) analyses of the lr(0) nanoparticles soluble in the ionic hquids, and by X-ray diffraction (XRD) of the isolated material. The mean diameters of iridium nanoparticles synthesized in the three ILs, as estimated by TEM, SAXS and XRD, are summarized in Table 15.1. 

F,MnO SC6, Manganese( I), pentacarbonyl-(trifluoromethanesulfonato)-, 26 114 F,0 CH, Acetic acid, trifluoro-tungsten complex, 26 222 F,02C,H, Acetic acid, trifluoro-ruthenium complex, 26 254 FjOjSCH, Methanesulfonic acid, trifluoro-iridium, manganese and rhenium complexes, 26 114, 115, 120 platinum complex, 26 126 F304PtSC,4H,5, Platinum(II), hydrido-(methanol)bis(triethylphosphine)-Irans-, trifluoromethanesulfonate,... 

IrClPjCMH45, Iridium(I), chlorotris-(triphenylphosphine)-, 26 201 IrF607P2S2C3,H11, Iridium(III), carbonyl-hydridobis(trifluoromethanesulfon(tri-phenylphosphine)-, 26 120... 

F IrN609S3C3H,a, Iridium(III), hexaam-mine-, tris(trifluoromethanesulfonate), 24 267... 

IrFjNsOsSsCsHis, Iridium(III), pentaam-mine(trifluoromethanesulfonato-O)-, bis(trifluoromethanesulfonate), 24 264... 

Preparation and recrystallization of the complex requires —20 hr. Pentaammine-(trifluoromethanesuIfonato-O)iridium(III) trifluoromethanesulfonate (O.SO g, 0.69 mmol) is dissolved in dry liquid anunonia (20 mL) contained in a SO-mL round-bottomed flask that can be fitted with a mercury bubbler. The flask is initially cooled in a Dry Ice/acetone bath to prevent excessive splashing of the solvent and hence loss of complex. 

X = Y = CO M = Mo, X = CO, Y=T] -allyl), the K -N,N,N coordination pattern has been observed. The complexes [M(Tm )Me] (M = Zn, Cd, Hg) have been recently reported and investigated for their ability to exchange alkyl and sulfur donor hgands between the Group 12 metals. A number of cationic Pt(IV) carbene complexes [Pt(=C(OMe)(NHR)) (Tp )(Me)2] (OTf) have been synthesized (R=Et, Pr, Pr, Bn OTf=trifluoromethanesulfonate) by methylation with MeOTf of the Pt-carboxamido precursors [Pt(C(=0)(NHR))(Tp )(Me)2]. A computational study on the mechanism of trimerization of aUcynes in the presence of a hydrotris(pyrazolyl)borate iridium catalyst [lr(Tp)(Ti -HC=CH)2] and the effect of substituent groups in R-C=C-R (R = Me or OCOMe) has been reported, demonstrating that two mechanisms for the formation of the benzene complex, including the intramolecular [4 + 2] cycloaddition and Schore mechanisms, are possible in this reaction. 

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