ClPd(μ-dppa)2PdCl [dppa = bis(diphenylphosphino)aminel (1) has been prepared by treating PdCl2(NCPh)2 with Pd2(dba)3·.CHCl3 (dba = dibenzylideneacetone) and dppa in CH2Cl2. Substitution reactions allow the synthesis of the neutral BrPd(μ-dppa)2 PdBr (2) and the cationic [Ph3PPd(μ-dppa)2PdPPh 3](BPh4)2 (4) derivatives. Complex 1 reacts with SnCl2 yielding Cl3SnPd(μ-dppa)2PdSnCl3 (3). The species R2N+ and SO2 insert into the PdPd bond of 1 to give the appropriate A-frame PdII-PdII complexes. Extrusion of SO2 takes place at room temperature. CO does not react with 1 in CH2Cl2 at room temperature. The insertion-elimination reactions of 1 with isonitriles RNC (R = p-Tol Cy) have been studied. The molecular structure of ClPd(μ-dppa)2PdCl·(CH3)2CO has been established by a single crystal X-ray study. The crystals are monoclinic, space group P21/c, with a = 13.540(3), b = 16.943(2), c = 21.082(15) Å, β = 105.257(42)° and Z = 4. The final R factor was 0.033 for 5091 observed reflections. The PdPd distance is 2.6378(6) Å.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry