Bharty, Manoj KumarSingh, AartiBharati, PoojaPandey, Shivendra KumarSingh, Devesh KumarGanesan, VellaichamyVerma, Praveen KumarAcharya, ArvindBharti, AkhileshButcher, Ray J.2025-01-272025-01-2720222682605https://dl.bhu.ac.in/ir/handle/123456789/14292Electrocatalytic 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�?M, 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. � 2021 John Wiley & Sons, Ltd.Articlehttps://doi.org/10.1002/aoc.6495