Synthesis and characterization of palladium complexes in combination with Phosphonium salts of 1,3-bis (chloro-methyl)-benzene and benzyl bromide by using spectroscopy methods

Phosphonium salts have the general formula R_4 P^+ X^- and are derived from the sub-ion phosphonium tetrahedral(〖pH〗_4^+ ), such as phosphonium iodide [〖p(〖CH〗_3 )〗_4^+ ]^-. Generally, phosphonium is attributed to an organic derivative, such as tetra-phenyl phosphonium chloride and tetra tetra-methyl phosphonium iodide. In this project, phosphonium compounds [C_6 H_5 (〖CH〗_2 〖pph〗_3 Br)], {C_6 H_4-1-(〖CH〗_2 Cl)-3-(〖CH〗_2 〖pph〗_3 Cl)} and palladium complexes, [C_6 H_5 (〖CH〗_2 〖pph〗_3 )]_2 [〖pd〗_2 〖cl〗_2 〖Br〗_2 ],[C_6 H_4-1-(〖CH〗_2 Cl)-3-(〖CH〗_2 〖pph〗_3 )]_2 [〖pd〗_2 〖Cl〗_6 ] were prepared and characterized. phosphonium salts was prepared from the reaction of 1,3-bis (chloro-methyl)-benzene and tri-phenyl phosphine. Then, through the reaction between phosphonium compounds and 〖Na〗_2 [〖pd〗_2 〖Cl〗_6 ] final complexes were prepared. Next phosphonium salt was prepared from the reaction between benzyl bromide and tri-phenyl phosphine. Then, final complexes were prepared through a reaction between phosphonium compounds and 〖Na〗_2 [〖pd〗_2 〖Cl〗_6 ].