Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Faculty Publications Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Bharath, M.; Sen, Srijit; Yadav, Himanshu; Anjali, Y.; Siddhanta, Soumik; Ghosh, Munmun Title A name given to the resource Dynamic Carboxylic Acid Arms Enable Proton Shuttling in Iron-Based Hydrogen Catalysis Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2026 Source A related resource from which the described resource is derived Chemistry - A European Journal; Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1002/chem.71150" target="_blank" rel="noreferrer noopener">https://doi.org/10.1002/chem.71150</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105038835788?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105038835788?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Bharath M., Department of chemistry, Ashoka University, Haryana, Sonipat, India; Sen S., Department of chemistry, Ashoka University, Haryana, Sonipat, India; Yadav H., Department of Chemistry, Indian institute of Technology Delhi, New Delhi, India; Anjali Y., Department of chemistry, Ashoka University, Haryana, Sonipat, India, Department of Chemistry, CHRIST University Bangalore, Karnataka, Bengaluru, India; Siddhanta S., Department of Chemistry, Indian institute of Technology Delhi, New Delhi, India; Ghosh M., Department of chemistry, Ashoka University, Haryana, Sonipat, India Description An account of the resource Devising artificial electrocatalyst with smartly installed proton relay motifs, as present in natural hydrogenase enzyme has long been proved to be an effective strategy. Proton responsive groups properly positioned near the active center act as a proton shuttle site and facilitate H2 generation via an easy hydride/proton coupling step. Herein we investigated a series of Fe (III) complexes of substituted picolinic acid which undergoes reversible dechelation and chelation in presence of acids and base respectively, making free carboxylic acid arms available near the metal center in acid conditions (CF3COOH/HBF4). Investigations on the electrocatalytic activity of these complexes showcased the involvement of these free carboxylic acid arms in electrocatalytic hydrogen evolution reaction (HER). Further, detailed mechanistic analysis reveals sequential two-electron reductions followed by protonation, enabled by pendant carboxylic acid arms, allow the formation of a metal hydride intermediate which facilitates efficient H2 generation. The catalyst showed efficient HER activity achieving maximum turnover frequency (TOFmax) of 10,000 s?1 with faradaic efficiency above 90%. These findings underscore the importance of tailored secondary-sphere interactions in designing efficient, earth-abundant electrocatalysts and these insights could be useful for future design principles of catalyst for several small molecule activation reactions. 2026 Wiley-VCH GmbH. Subject The topic of the resource carboxylic acid arms; electrocatalysis; hydrogen evolution; iron complex; pendant proton relay Publisher An entity responsible for making the resource available John Wiley and Sons Inc Relation A related resource ISSN: 9476539; CODEN: CEUJE Language A language of the resource English Type The nature or genre of the resource Article Rights Information about rights held in and over the resource Restricted Access; Hardcopy may be available in the library Format The file format, physical medium, or dimensions of the resource online