Schiff base triphenylphosphine palladium (II) complexes: Synthesis, structural elucidation, electrochemical and biological evaluation

作者：Shabbir Muhammad; Akhter Zareen^*; Ahmad Iqbal; Ahmed Safeer; Shafiq Maryam; Mirza Bushra; McKee Vickie; Munawar Khurram Shahzad; Ashraf Ahmad Raza

来源：Journal of Molecular Structure, 2016, 1118: 250-258.

DOI：10.1016/j.molstruc.2016.04.003

• Palladium (II) complexes
• Structural elucidation
• Drug-DNA intercalation

The complexes N-(2-oxidophenyl)salicylideneiminatotriphenylphosphine palladium(II) (1) and N-(2-sulfidophenyl)salicylideneiminato triphenylphosphine palladium(II) (2) of tridentate Schiff bases derived from salicylaldehyde and an amino- or thiophenol, have been synthesized and characterized by various spectroscopic, analytical and electro-analytical techniques. X-ray single crystal analysis of complex 1 has revealed its square planar geometry. The thermal analysis has shown the absence of coordinated water and final degradation product is PdO. The alkaline phosphatase studies have indicated that enzymatic activity is concentration dependent which is inversely proportional to the concentration of the compounds. The biological assays (brine shrimp cytotoxicity, DPPH) have reflected their biologically active and mild antioxidant nature. However, results of DNA protection assay have shown that they possess moderate protective activity against hydroxyl free radicals (center dot OH). The voltammetric studies ascertain two-electron reduction of the compounds through purely diffusion controlled process and reveal intercalative mode of drug DNA interactions.

• 出版日期2016-8-15