460312-20-3Relevant articles and documents
Neutral organometallic palladium(II) aquo complexes
Bartolomé, Camino,Espinet, Pablo,Vicente, Laura,Villafa?e, Fernando,Charmant, Jonathan P.H.,Orpen, A. Guy
, p. 3536 - 3543 (2008/10/08)
The reactions of chlorobridged cyclometalated complexes [Pd(C-N)(μ-Cl)]2 (C-N = orthometalated N, N-dimethylbenzylamine, dmba; 2-(para-tolyl)pyridine, p-tolpy; azobenzene, azb; N,N-dimethyl-1-naphthylamine, dmna; and 2-benzylpyridine, bzpy) with Li(Fmes) (Fmes = 2,4,6-tris(trifluoromethyl)phenyl or nonafluoromesityl) give, after hydrolysis, neutral aquo complexes |Pd(C-N)(Fmes)(OH2)], where the ipso carbon atoms of the Fmes and the cyclometalated ligand are coordinated cis, as shown by an X-ray diffraction study of [Pd-(dmba)(Fmes)(OH2)]. The aquo ligand is readily displaced by other ligands, giving complexes [Pd(C-N)(Fmes)L] (L = PPh3, 2,6-lutidine, NH3, CNtBu, CO) when monodentate ligands are employed or [Pd(dmba-C)(Fmes)(2,2′-bipy)], which contains a chelating 2,2′-bipyridyl and a monodentate C-bonded dmba. Different processes in solution are detected for the complexes containing the bulkier ligands: ligand rotation in the complex with PPh3; inversion of the bipy ligand in [Pd(dmba-C)(Fmes)(2,2′-bipy)]; and equilibria with residual water in the solutions of [Pd(C-N)(Fmes)(lut)] and [Pd(dmba-C)(Fmes)(2,2′-bipy)].