Synthesis, Spectral Characterization, Crystal Structure, and Antioxidant Properties of novel Palladium(II) Complex from ONS Donor 1,5-bis(2-hydroxybenzylidene)thiocarbohydrazone

Authors : Yeliz KAYA

Pages : 129-138

Doi:10.18596/jotcsa.1194323

View : 11 | Download : 7

Publication Date : 2023-02-28

Article Type : Research Paper

Abstract :A new Pdinsert ignore into journalissuearticles values(II); complex, [Pdinsert ignore into journalissuearticles values(PPh3);insert ignore into journalissuearticles values(L);] insert ignore into journalissuearticles values(L = 1,5-bisinsert ignore into journalissuearticles values(2-hydroxybenzylidene);thiocarbohydrazone, PPh3 = triphenylphosphine);, was synthesized and characterized by FTIR, 1H NMR and UV-Vis spectroscopies and elemental analysis. The molecular structure of [Pdinsert ignore into journalissuearticles values(PPh3);insert ignore into journalissuearticles values(L);] was confirmed by the single-crystal X-ray diffraction technique. Palladium ion has distorted square planar geometry according to X-ray diffraction studies. The free thiocarbohydrazone insert ignore into journalissuearticles values(L);, potentially a pentadentate ONSNO donor, acted as a tridentate ONS donor. The antioxidant capacity of the free thiocarbohydrazone and Pdinsert ignore into journalissuearticles values(II); complex was determined using the CUPRAC insert ignore into journalissuearticles values(cupric reducing antioxidant capacity); method. Also, the DPPH method was used to test the free radical scavenging activity of the free thiocarbohydrazone and Pdinsert ignore into journalissuearticles values(II); complex. Antioxidant activity studies showed that free thiocarbohydrazone exhibited better activity than Pdinsert ignore into journalissuearticles values(II); complex.
Keywords : Thiocarbohydrazone, Palladium II, complex, Triphenylphosphine, Crystal structure, Antioxidant activity