Pentamethylcyclopentadienyl-rhodium and -iridium complexes. Part 31. Tri-µ-phenoxo-rhodium complexes and a facile H/D exchange reaction

Abstract

[{Rh(C₅Me₅)}₂(OH)₃][PF₆] reacts with phenol to give [{Rh(C₅Me₅)}₂(OPh)₃][PF₆](3), containing three µ-phenoxo-ligands. The related complexes [{Rh(C₅Me₅)}₂(OH)₃]X (X = Cl or OH) react with phenol to give [{Rh(C₅Me₅)(OPh)₂(PhOH)₂}_n] which is formulated as the tri-µ-phenoxo-complex [{Rh(C₅Me₅)}₂(OPh)₃]-[(PhO)₅H₄](4), largely on the basis of the ¹³C n.m.r. spectra. The methyl hydrogens in (4)[but not in (3)] exchange very rapidly for deuterium in [²H₆] acetone solution.