HOMOLEPTIC CARBONYL CATIONS OF PALLADIUM(I), PALLADIUM(II), PLATINUM(II), AND GOLD(I) - SIMPLIFIED SYNTHETIC ROUTES TO THEIR FLUOROANTIMONATE(V) SALTS

The original synthetic routes to the new noble metal carbonyl cations [Au(CO)(2)](+) and [M(CO)(4)](2+), M = Pd or Pt, as [Sb2F11] salts are multi-step procedures that involve corrosive reagents and require com mercially unavailable starting materials. We report here two general s implifications: (i) the sole use of liquid antimony(V) fluoride as rea ction medium in a single-step carbonylation process, and (ii) the use Of the commercially available chlorides AuCl3 and MCl(2), M = Pd or Pt , as starting materials, in addition tit the binary fluorosulfates Au( SO3F)(3), Pd[Pd(SO3F)(6)], and Pt(SO3F)(4). The simplified routes deve loped here for [Aa(CO)(2)][Sb2F11] and [M(CO)(4)][Sb2F11](2), M=Pd or Pt, should make these new reagents more easily available for wider use in synthesis. Tn addition, these routes are found suitable for the ge neration of neu carbonyl cations of electron-rich metals.