106587-15-9Relevant academic research and scientific papers
Structure and Fluxional Behaviour of Some Aqua-complexes of Rhodium(III) and Iridium(III)
Deeming, Anthony J.,Proud, Graeme P.,Dawes, Helen M.,Hursthouse, Michael B.
, p. 2545 - 2550 (2007/10/02)
The single-crystal X-ray structure of trans,mer- confirms a structure based on 1H and 31P- n.m.r spectroscopy.The weakly bonded H2O ligand is trans to PMe2Ph, a ligand with a strong trans influence, and has a long Ir-O bond and a short Ir-P bond trans to it.The phosphine ligand site exchange, apparent in the n.m.r. spectra of this compound and its rhodium analogue, is a result of rate-determining H2O dissociation to give the five-co-ordinate intermediates + (M = Rh or Ir), which are probably square-pyramidal species undergoing rapid pseudo-rotation.The rates of PMe2Ph exchange and the rates of exchange of free and co-ordinated H2O are similar in each case but greater for Rh than Ir.
