Crystal Structure of Cationic η3-Methallylpalladium Complexes Bearing Aliphatic Iminopyridine Ligands

Resumo

Three aliphatic ligands are synthesized and fully characterized by IR, ¹H and ¹³C NMR spectroscopy. These ligands react with a zerovalent compound Pd(dba)₂ in the presence of methallyloxytris(dimethylamino) phosphonium hexafluorophosphate salt [C₄H₇OP(NMe₂)₃]⁺\({\rm{PF}}_6^-\) as an allylating agent for the synthesis of cationic η₃-methallylpalladium complexes to give three cationic mononuclear η₃3-methallylpalladium complexes in high yields. These formed complexes are characterized by IR, ¹H NMR and ¹³C NMR spectroscopy. One of them is characterized by X-ray diffraction. A DFT-optimized structure is also discussed.