Mercuric halide adducts of some cyclo-octa-1,5-diene rhodium complexes

Abstract

The adducts [RhX(1,5-C₈H₁₂)]₂,2HgX₂(X = Cl or Br) have been prepared by the action of mercuric halide on [RhX(1,5-C₈H₁₂)]₂. Mercuric chloride and the mononuclear complexes RhCl(1,5-C₈H₁₂)L (L = Ph₃P or piperidine), also give the adduct [RhCl(1,5-C₈H₁₂)]₂,2HgCl₂, the other product of reaction being a mercuric chloride complex of the ligand L. However, when L is Ph₃As or p-toluidine the adducts RhCl(1,5-C₈H₁₂)L,2HgCl₂ are formed. All the adducts dissociate in solution and the mercury halide–rhodium complex interaction is weak.

I.r. (400–200 cm.^–1) of the products are reported.