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Abstract
The phosphorus‐sulfur asymmetric ligands 2‐(2‐diphenylphosphinoethyl)‐thiophene (P‐S2), 2‐(3‐diphenylphosphinopropyl)thiophene (P‐S3), and [2‐[(methyl‐thio)methyl]phenyl]diphenylbenzene (P‐SM) have been synthesized and characterized by IR, 1H‐NMR, and 13C‐NMR spectroscopy. Reaction of P‐S2, P‐S3 or P‐SM with equimolar amount of dichlorobis(benzonitrile)palladium(II), [Pd(PhCN)Cl2], gave the complexes [Pd(P‐S2)Cl2], [Pd(P‐SM)Cl2] and [Pd(P‐S3)(μ‐Cl)Cl]2, respectively. However, reaction of P‐S2 with [Pd(PhCN)Cl2] in a molar ratio of 2:1 afforded the complex [Pd(P‐S2)2Cl2]. The above complexes were characterized by microelemental analysis, IR, 1H‐NMR and 13C‐NMR.