Synthesis and characterization of cyclopalladated complexes of benzylamine by IR and NMR spectroscopy studies

The chloro-bridged dimer [Pd(mu-Cl)(C(6)H(4)CH(2)NH(2)-kappa(2)-C,N)](2) reacts with PPh(2)Et, P(p-tolyl)(3), AsPh(3), piper (piper =C(5)H(10)N) and Py in dichloromethane at room temperature for 24 h in a one-to-two molar ratio and undergoing bridge-splitting reactions to give [PdCl(C(6)H(4)CH(2)NH(2)-kappa(2)-C,N)L] (L =PPh(2)Et (1a), P(p-tolyl)(3) (1b), AsPh(3) (1c), piper (1d), C(6)H(4)CH(2)NH(2) (3e) and Py (1f)). Complex 1f in THF at room temperature reacts with a stoichiometric amount of TlTfO (thallium triflate, TfO=CF(3)SO(3)) and Py (molar ratio 1 : 1 : 1) to afford [Pd(C(6)H(4)CH(2)NH(2))(Py)(2)]TfO (2). Infrared and NMR spectroscopies allow unambiguous characterization of these products.