Reactions of [Pd(dmba)(m-X)]2 (dmba = N,N-dimethylbenzylamine; X = Cl, N3, NCO) with thiourea (tu), were performed at room temperature, giving compounds of the type [Pd(dmba)(X)(tu)]. All compounds were characterized by elemental analyses, I. R. and ¹H NMR spectroscopies. The infrared spectra showed that the coordination of thiourea to palladium occured through the sulphur atom. The cyclometallated ring was confirmed by ¹H NMR spectroscopy. Taking into account these techniques the structures of these compounds were proposed as being monomers with a square-planar coordination geometry around the palladium atom.
Cyclopalladated; pseudo-halides; thiourea; spectroscopy
