Abstract
A wide range of new arene complexes of mercury(II) have been isolated from the appropriate arene and a strong acid salt of mercury (Hg(SbF 6) 2, HgF(AsF 6) or Hg(O 2CCF 3) 2) in liquid SO 2. Low-temperature, slow-exchange (except when Arene = C 6H 6), 1H and 13C NMR spectra of the systems Hg(SbF 6) 2AreneSO 2 have provided evidence for very stable Hg(Arene) 2+ and Hg(Arene)2 2+ complexes. Intramolecular exchange is rapid at the lowest accessible temperatures: the intramolecular exchange-averaged couplings to 199Hg suggest strongly that the arenes are bound to mercury in an η 1-manner.
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