Novel binuclear palladium(II) complexes of 2-oxoquinoline-3-carbaldehyde Schiff bases: Synthesis, structure and catalytic applications

A series of novel binuclear Pd(II) complexes of the type [(PPh3)2ClPd(L)PdCl] [where L = dianionic bridged ligands derived from 2-oxo-1,2-dihydroquinoline-3-carbaldehyde or its derivatives with o-aminophenol/o-aminothiophenol] have been reported. The new complexes have been characterized by elemental analysis, FT-IR, UV–Vis and NMR (1H and 31P) spectroscopic techniques. The coordination mode of the ligands and the geometry of the complexes were confirmed by single crystal X-ray crystallography of one of the complexes. The catalytic efficiency of one of the binuclear Pd(II) complexes was tested for N-arylation of imidazole.

A series of novel binuclear Pd(II) complexes have been reported. The new complexes have been characterized by various spectroscopic techniques. The geometry of the complexes was confirmed by single crystal X-ray crystallography of one of the complexes. Further, the catalytic efficiency of one of the binuclear Pd(II) complexes was found to be effective for N-arylation of imidazole.Figure optionsDownload as PowerPoint slideHighlights
► A series of novel binuclear Pd(II) complexes have been reported.
► The ligand behaves as a dibasic tetradentate chelate.
► One of the complexes has been characterized by single crystal X-ray analysis.
► The new Pd(II) complexes are good catalysts for N-arylation of imidazole.