Kumbhare Liladhar B, Udayan Anu Prathap M, Singla Hardik, Sawant Shilpa N, Ruz Priyanka, Wadawale Amey, Bahadur Jitendra
Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
Department of Metallurgical and Materials Engineering, Punjab Engineering College (Deemed to be University), Sector-12, Chandigarh 160012, India.
Dalton Trans. 2023 Dec 12;52(48):18302-18314. doi: 10.1039/d3dt02170j.
A analogous series of 2-(3,5-dimethylpyrazol-1-yl)phenyl substituted selenoether complexes of palladium [PdCl(RSeCHdmpz)]; (R = CHCOOH (1), CHCHCOOH (2), and CHCHOH (3); dmpz = dimethylpyrazole) were ably synthesized in a facile manner and exhaustively characterized. Insight into molecular structures of these complexes was keenly probed through single crystal X-ray diffraction (XRD) analysis, unfolding the structural scaffolds and laying into molecular aggregation, availed through hydrogen bonding interactions borne out of tethered protic groups. The complexes were converted to capping free palladium selenide (PdSe) nanoparticles through pyrolysis and evaluated for their electrocatalytic efficacy towards the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER) and methanol oxidation reaction (MOR) in alkaline medium. In an alkaline medium, PSNP1 (PdSe) obtained from the hydrogen bonded aggregate of complex PdClL (1) produced good HER activity. PSNP1 had a little decrease in current density after 300 continuous cycles, which proves that the catalyst presents high stability in the recycling process. For the electrocatalytic oxidation of CHOH, the electrocatalytic rate constant () obtained was 0.3 × 10 cm mol s.
