Reacting neutral Pt(ii) hydroxo compounds (NN)Pt(R)(OH) (R = OH, Ph, and Me, NN = bulky terphenyl diimine) with silver bis(trifluromethanesulfonyl)imide produces new hydroxo complexes with the silver binding through the Pt-OH bonds as determined by 195Pt NMR and X-ray analysis (R = OH). These complexes were found to activate the aromatic C-D bonds of C6D 6 at significantly enhanced rates relative to the silver free hydroxo complexes. Mechanistic studies for R = Ph are consistent with a homogeneous pathway that is bimolecular (ΔH‡ = 17(2) kcal mol -1 and ΔS‡ = -25(6) e.u. and ΔG‡295 = 10(2) kcal mol-1), first order in [Pt] and substrate.
ASJC Scopus subject areas
- Inorganic Chemistry