A general approach has been designed to synthesize mononuclear orthopalladated complexes containing mono- and bidentate ligands from the binuclear orthopalladated complex of triphenylphosphite. In this way, PdCl 2 was refluxed with PdCl 2 [P(OPh) 3 ] 2 in toluene to obtain the orthopalladated complex [Pd( m -Cl)P(OPh) 2 (OC 6 H 4 )] 2 ( 1 ) which was used as a precursor to react with mono- and bidentate ligands. Triphenylphosphite (PPh 3 ), 2,4,6-trimethylpyridine (Me 3 Py), thiourea (tu) and pyridine (Py) as monodentate ligands were reacted with binuclear precursor complex in CH 2 Cl 2 at room temperature to get mononuclear complexes [Pd(PPh 3 )(Cl){P(OPh) 2 (OC 6 H 4 )}] ( 2a ), [Pd(Me 3 Py)(Cl){P(OPh) 2 (OC 6 H 4 )}] ( 2b ), [Pd(tu)(Cl){P(OPh) 2 (OC 6 H 4 )}] ( 2c )and[PyH][Pd(Cl) 2 {P(OPh) 2 (OC 6 H 4 )}] ( 2d ), respectively. Also, mononuclear complexes [Pd(Phen){P(OPh) 2 (OC 6 H 4 )}]NO 3 ( 3a )and [Pd(MePhen){P(OPh) 2 (OC 6 H 4 )}]NO 3 ( 3b ) were synthesized from the reaction of binuclear precursor complex with AgNO 3 in THF at room temperature and then, addition of 1,10-phenanthroline (Phen) and 4-methyl-1,10-phenanthroline (MePhen) as bidentate ligands.In these complexes, the1,10-phenanthroline (Phen) and 4-methyl-1,10-phenanthroline (MePhen) ligands are coordinated to the palladium center through their nitrogen atoms as chelates.The complexes were fully characterized by using FT-IR spectroscopy, Elemental analysis, multinuclear NMR spectroscopy ( 1 H, 13 C and 31 P) and X-ray crystallography. Suzuki reaction is a powerful method for the formation of C( sp 2 )-C( sp 2 ) bonds under mild reaction conditions. Attheend,theorthopalladatedcomplex[Pd(PPh 3 )(Cl){P(OPh) 2 (OC 6 H 4 )}] ( 2a ), has been used as a catalyst in the Suzuki reaction.