Synthesis and characterization of 2-phenylaniline cyclopalladated complexes

Reaction of the dinuclear complex [Pd{κ2-N2′,C1-2-(2′-NH 2 C 6 H 4 )C 6 H 4 }Cl] 2 ( 1 ) with ligands (L = 4-picoline, sym-collidine) gave the six-membered palladacycles [Pd{κ2-N2′,C1-2-(2′-NH 2 C 6 H 4 )C 6 H 4 }Cl(L)] ( 2 ). The complex 1 reacted with AgX (X = CF 3 SO 3 , BF 4 ) and bidentate ligands [L–L = phen (phenanthroline), dppe (bis(diphenylphosphino)ethane), bipy(2,2′-bipyridine) and dppp (bis(diphenylphosphino)propane)] giving the mononuclear orthopalladated complexes [Pd{κ2-N2′,C1-2-(2′-NH 2 C 6 H 4 )C 6 H 4 }(L–L)] ( 3 ) [L–L = phen, dppe, bipy and dppp]. These compounds were characterized by physico-chemical methods, and the structure of [Pd{κ2-N2′,C1-2-(2′-NH 2 C 6 H 4 )C 6 H 4 }Cl(L)] (L = sym-collidine) was determined by single-crystal X-ray analysis.