Study of reactions of di-μ-chloro-bis[o-(dialkylamino)phenyl]dipalladiums(II) with lithium chloride in acetic acid by the 13C NMR method

The authors determine that dimeric cyclopalladated N,N-dialkylbenzylamines react with LiCl in acetic acid with the formation not of the anionic monomeric complexes reported earlier but of dialkylbenzylammonium chloropalladates. The presence of a nonmetallated ring in these complexes is evidenced unambiguously by the C 13 NMR spectra. When the salts obtained are dissolved in methanol fast o-palladation occurs with the regeneration of the original dimeric palladocycles. Chemical shifts and spin-spin coupling constants are analyzed