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Three novel Cd(II) metal complexes 1–3 have been synthesized with different derivatives of thiazoline, hydrazide and carbodithioate. These metal complexes are abbreviated as [Cd (tht)2]n, [Cd (Hpph)2]n and [Cd (mpps)2]n along with their respective ligands Htht, H2pph and mpps. The developed metal complexes are characterized using X‐ray diffraction (XRD) data and other spectroscopic techniques (Infrared [IR], nuclear magnetic resonance [NMR], ultraviolet–visible [UV–vis] and fluorescence). The polymeric nature of these cadmium complexes have been ascertained by single XRD data. Several significant interactions were also revealed, which aid in the stabilization of these complexes' supramolecular architecture. Comparing complex 2 with complexes 1 and 3, the absorption spectra of complex 2 exhibits a greater λmax. On comparing the fluorescence study of these complexes, complex 2 has a higher fluorescence than complexes 1 and 3. The cyclic voltammetry (CV) approach was employed to detect the electrochemical behaviour of these complexes, as well as the sensing of uric acid (UA) by these complexes via modified glassy carbon electrodes (GCEs). According to the conclusions received by CV study, the modified electrode containing complex 3 has admirable UA electro catalytic activity. This UA electrochemical sensing device offers a low detection limit (0.3 μM), fine linear ranges (30–1500 μM), reasonable sensitivity, and a fast reaction time. [ABSTRACT FROM AUTHOR]

Electrocatalytic water oxidation by transition metal complexes is an emerging area of research. Here, two cobalt(III) complexes [Co(ftsm)NH3(o‐phen)]·H2O (1) {ftsm = bis(5‐furan‐1,2,4‐triazole)‐3‐sulfinamide} and [Co(ptsm)NH3(o‐phen)]·CH3OH (2) {ptsm = bis(5‐phenyl‐1,2,4‐triazole)‐3‐sulfinamide} were synthesized and characterized by various spectroscopic and X‐ray crystallography techniques. Complexes 1 and 2 were found to have admirable electrocatalytic activity towards oxygen evolution reaction (OER). The Tafel slope values for GC/Nf‐Complex‐2 and GC/RuO2 were 53 and 60 mV/dec, respectively. Consequently, complex 2 possesses a better water oxidation response than standard material RuO2. The ligands Haftt, Haptt, o‐phen, and complexes 1 and 2 were also tested for their cytotoxicity against Dalton's lymphoma (DL) cells employing MTT assay and found to have significant cytotoxicity. The IC50 values of Haftt, Haptt, mixed ligands Haftt + o‐phen and Haptt + o‐phen, and complexes 1 and 2 against DL cells were found to be 150, 400, 200, 450, 80, and 5 μM, respectively. The complexes were found to have minimal effect on normal cells. The remarkable IC50 value for complex 2 shows that it can be utilized as a potential anticancer agent against DL cells. [ABSTRACT FROM AUTHOR]