Tetramethylammonium trifluoromethyltellurate(0), [NMe4]TeCF3, synthesis, characterisation and properties

Bis(trifluoromethyltellurato(0))metallates(I) of copper, silver and gold, [M(TeCF3)2]− (M = Cu, Ag, Au)

“…signals are sharper (a signal in the region of ''free'' [TeCF 3 ] À is not observed) and the amounts of the by-products formed (cf. [14]) are lower. None of the facts mentioned above can be applied to the behaviour of the gold derivative, indicating that the [Au(TeCF 3 ) 2 ] À anion formed is not involved in such equilibria.…”

“…[NMe 4 ]TeCF 3 was prepared according to [14], [PNP]Br according to [28] and used after crystallisation from CH 2 Cl 2 as the 1:1 compound with dichloromethane, CuBr according to [29]. Ag[BF 4 ] (Apollo) and AuCl were used as received.…”

“…While 352 Hz). 19 F-and 125 Te-NMR spectra of the silver compound show the signals of ClCH 2 TeCF 3 and CH 2 (TeCF 3 ) 2 [14] directly after dissolving the argentate in dichloromethane. The signal of [Ag(TeCF 3 ) 2 ] À is significantly broadened in both, the 19 F-NMR and the 125 Te{ 19 F}-NMR spectra (d( 19 F) À11.1 (s, 2 J125 Te; 19 F = 168 Hz), d( 125 Te) 206 (broad), d( 13 C) 93.1 (q, 1 J F;C = 352 Hz)).…”

“…The convenient synthesis of [NMe 4 ]TeCF 3 [14] offers a new reagent for nucleophilic ligand replacement. Herein, we describe the reactions of [NMe 4 ]TeCF 3 and group 11 compounds from which the argentate(I), [Ag(TeCF 3 ) 2 ] À , and the aurate(I), [Au(TeCF 3 ) 2 ] À , were isolated as analytically pure solids after cation exchange with [PNP]Br.…”

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

“…[5] The efficient use of the reagent combination comprising a fluoride source plus trimethyl(perfluoroalkyl)silane has allowed us in recent years to prepare numerous perfluoroalkyl-metalate complexes of late transition metals as well as main-group elements that are characterised by their extreme reactivity [10][11][12][13] or stability. [14][15][16] (Trifluoromethyl)gold compounds, whereby the predominant numbers of the characterised derivatives contain gold in the trivalent oxidation state, have generally been known for more than 30 years. [17] The number of trifluoromethyl gold(I) compounds is limited to the examples of AuCF 3 ·RPF 2 , [18] AuCF 3 ·PR 3 [19] and AuCF 3 ·CϵNMe; [20] however, no (perfluoroalkyl)aurate(I) has hitherto been described to the best of our knowledge.…”