Synthesis and Double C-H Activation of Palladium(II) Complexes with the Cationic Ligand [To3PCH2(Py-2)]+ (To = C6H4Me-4, Py = Pyridine). Some Evidence of the Formation of a Palladium(IV) Complex. Crystal and Molecular Structures of trans-[PdCl2PyCH2PTo3-22](ClO4)2.cntdot.4Cl2CH2, [PdCl.mu.2-.kappa.3-C6H3PTo2CH(Py-2')-2Me-4]2.cntdot.2Cl2CH2, and cis-[PdI2.kappa.2-C6H3PTo2CHCl(Py-2')-2Me-4].cntdot.Cl2CH2 | Publicación