Abstract
Two novel and neutral bidentate Palladium(II) complexes of the type, [PdX2(dpme)] (X = Cl 1, OAc 2], have been synthesized from 1,1-bis(diphenylphosphinomethyl)ethene (dpme) ligand and characterized on the basis of elemental analyses, infrared, FAB-MS and H-1-, C-13-, and P-31 NMR spectroscopy. The structure of 1 has been ascertained by single crystal X-ray crystallography and shows cis configuration in a square planar structure while the structural behavior of the dpme ligand through the formation of these complexes has been monitored by P-31(H-1)NMR and IR spectra. These Pd(II) complexes have shown a very significant catalytic role in Heck reaction giving high yield under mild condition. (C) 2011 Elsevier B.V. All rights reserved.