109Ag-NMR

Silver(I) trifluoromethanethiolate (AgSCF3) has been used to prepare trifluoromethyl aryl sulfides by reaction with iodide.996 A mixed silver-zinc thiolate complex [Ag4Zn2(SC6H2-Pr -2,4,6)6(OTf)2] has been prepared by reaction of AgOTf with Zn[N(TMS)2]2 in the presence of the thiol.99 Solid-state 109Ag NMR can be a sensitive environment probe for silver thiolates,998 overall for biological thiolates ligands as cysteine,999 or proteins such as metallothionein.1000,1001... 

It has been demonstrated by 1H, 13C, and 109Ag NMR that a 7r-alkyne-Ag complex and then an alkynyl silver are formed in situ from alkyne and silver salt under conditions related to those used for Ag-catalysed alkynylation or for Ag/Pd-catalysed sp-sp2 cross-coupling reactions.142 These observations have prompted a rationale of the mechanisms of these reactions. 

Further investigations including 109Ag NMR confirmed the in situ formation of alkynyl silver through jt complexation and proton abstraction.117 They also revealed that the best palladium catalyst, namely, palladium tetrakis(triphenylphosphine), played a key role, in that a phosphine liberated by decoordination ended up on the alkynyl silver, stabilizing it and rendering it more soluble.118 The resulting alkynyl silver then entered the palladium catalytic cycle at the transmetallation step (See section 10.6.2).105... 

Ag NMR was used to study silver dynamics in silver phosphate glass-esio8,109,205 an(j sj ver borate208 glasses that were doped with silver iodide to... 

Fig. 37. 109Ag NMR three-time correlation functions F3(rml = constant tm3) for crystalline...

P, 107Ag and 109Ag NMR spectroscopic study of [Ag(/z-R2PhCH2PR2)3Ag]2+-(AsF6)2 complexes. 479... 

P NMR and 109Ag NMR study of [bis(phosphonio)isophosphindolide]silver complexes... 

TABLE 2. 31P and 109Ag NMR data for the silver complexes 10, 11, 13-17 in solution41... 

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