Abstract

Organochalcogenido-bridged dimeric 2-methylallylpalladium complexes of the type [Pd₂(μ-ER)₂(η³-C₄H₇)₂] (1) [ER = SBu^t (1a), SPh (1b), SC₆F₅ (1c), SePh (1d), TePh (1e)] have been prepared. The structure of the SBu^t bridged complex has been established by single crystal X-ray diffraction analysis. The four-membered Pd₂S₂ ring adopts a non-planar conformation with the two η³-2-MeC₃H₄ (η³-C₄H₇) in a syn configuration. The thermal behaviour of these complexes has been investigated by thermogravimetric analysis. These complexes yield Pd₄E (E = S or Se) or Pd₃Te₂ at moderately low temperatures.