The generality of metal atom-free radical reactions and synthesis of new trifluoromethylalkyls of gold(III) and silver

Synthesis and NMR spectroscopic investigation of salts containing the novel [Au(CF3)nX4−n]− (n=4–1, X=F, CN, Cl) anions

“…The 19 F NMR chemical shifts of the CF 3 À ligands are measured in the typical region À10 to À50 ppm [2][3][4][5][6]11,12]. The 19 F NMR signals of the fluoro ligands attached to gold(III) are observed in the characteristic range from À200 to À350 ppm [27].…”

“…cis-PtClðPMePh 2 Þ 2 ðCF 3 Þ þ CO (7) (v) Reaction of metal atoms with CF 3 radicals (Eq. (8)) [1,11]:…”

“…Despite several gold(III)-, gold(II)-and gold(I)-trifluoromethyl complexes being described: [Au(CF 3 ) 4 ] À [6], Au(CF 3 ) 3 (PR 3 ) (R ¼ Ph, Me, Et) [3,11], Au(CF 3 ) 2 X(PR 3 ) (X ¼ I; R ¼ Me) [3], Au(CF 3 )X 2 (PR 3 ) (X ¼ Me, I; R ¼ Ph, Me) [2,12], (CF 3 )Au(CH 2 PPh 2 CH 2 ) 2 AuCF 3 [5] and Au(CF 3 )(PR 3 ) (R ¼ Ph, Me, Et) [2][3][4]12], so far no examples of related gold trifluoromethyl complexes with fluoro, chloro or cyano ligands are known [1].…”

Synthesis and Uses of Organosilver Compounds

“…Spectroscopic data of AgCF 3 were registered for the cocondensation product of trifluoromethyl radicals and silver vapour at 196°C which, upon addition of PMe 3 , yielded AgCF 3 (PMe 3 ) 26 . The highly photosensitive trifluoromethyl silver complexes [AgCF 3 (PR 3 )] (R D Me, Et) have also been prepared by ligand exchange reactions between Cd(CF 3 ) 2 Ð glyme (glyme D MeOCH 2 CH 2 OMe) and AgOAc, followed by addition of PR 3 27 .…”

“…The first stable carbene complex of Ag(I) was described in 1993 by Arduengo and coworkers. The reaction of the stable nucleophilic carbene 1,3-dimesitylimidazol-2-ylidene and silver triflate afforded the homoleptic bis(carbene) adduct of silver (26) …”