CSi bond cleavage of trihalomethyltrimethylsilane by alkoxo- and aryloxogold or -copper complexes

Hydrolytic Decomposition of Tetramethylammonium Bis(trifluoromethyl)aurate(I), [NMe4][Au(CF3)2]: A Route for the Synthesis of Gold Nanoparticles in Aqueous Medium

“…[20] The use of Me 3 SiCF 3 as a reagent for the synthesis of AuCF 3 ·PR 3 complexes has been reported in reactions of synthetically challenging alkoxy-or aryloxy-gold(I) compounds, AuORЈ·PR 3 [RЈ = CH(CF 3 ) 2 , Ph]. [23] The synthesis of the bis(trifluoromethyl)aurates(I), [Au (CF 3 ) 2 ] -, proceeds similar to the procedure reported for argentates, [15] platinates [14] and bismutates [11] (Scheme 1). Mechanistically, the hypercoordinated (hypervalent) trimethyl(trifluoromethyl) fluorosilicate anion that is formed in the elementary step [10] 2 ] was obtained as a colourless solid in high yield and exhibited low sensitivity towards air and daylight.…”

Gold(I) and gold(III) complexes with anionic oxygen donor ligands: hydroxo, oxo and alkoxo complexes

“…The Cbonded gold enolates likewise formed are the active catalysts for the condensation reaction. Other interesting reactions, carried out by both the alkoxo (CF3)2CHOAuL (28) and the phenoxo PhOAuL (23')(L = PPh3, PCy3, PMe3, PMe2Ph) complexes, are the selective ring opening of thiiranes to give 2-(alkoxy-or -aryloxy)ethylsulfanylgold(I) complexes under ambient conditions (41) and the C-Si bond cleavage of trihalomethyltrimethylsilane to give trihalomethylgold complexes Au(CX3)L and the corresponding silyl ether Me3SiOR (42). Ring opening takes place at the less hindered C-S bond of the thiirane.…”

The solid complex Zn(CF3)Br·2DMF as an alternative reagent for the preparation of both, trifluoromethyl and pentafluoroethyl copper, CuCF3 and CuC2F5

“…Some publications [7][8][9][10][11] show that the formation of CuCF 3 can be achieved using the commercially available compound Me 3 SiCF 3 either starting from copper alkoxides [8,9] or the system of heavier copper halides and an alkali fluoride [7,10,11].…”