Coordination properties of imino(2-pyridyl)methylpalladium(II) compounds. Preparation and thermal rearrangement of binuclear adducts with palladium(II) and platinum(II) chlorides

Article abstract of DOI:10.1016/0022-328X(88)80422-4

The imino(2-pyridyl)methylpalladium(II) compound py-2-C(R')=NR (R = C6H4OMe-p, R' = trans-PdCl(PPh3)2) reacts with 2, , and K to give binuclear complexes > (M= Pd, Pt), in which the α-diimino group acts as a chelating bidentate ligand.In hot 1,2-dichloroethane, these complexes undergo a PPh3 and chloride ligand exchange at rates which depend markedly on the metal M (Pd >> Pt), to yield the new derivatives >.The ligand exchange is followed by a much slower decomposition to .Labile intermediates of the same type, >, are formed also in the thermal decomposition of > (R = C6H4OMe-p; R' = trans-PdCl(PPh3)2; R'' = H, Me).The reactions of the dimethyldithiocarbamate derivative py-2-C(Pd(dmtc)PPh3))=NR (R = C6H4OMe-p) with K and yield the different products > and >, respectively.