{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T18:20:58Z","timestamp":1793038858609,"version":"4.5.0"},"reference-count":49,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2025,2,15]],"date-time":"2025-02-15T00:00:00Z","timestamp":1739577600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100010751","name":"Fondecyt","doi-asserted-by":"publisher","award":["1210689"],"award-info":[{"award-number":["1210689"]}],"id":[{"id":"10.13039\/501100010751","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Two new Cu(II) (CP1) and Co(II) (CP2) coordination polymers (CPs) with the triazole ligand 5-methyl-1-(pyridin-4-yl-methyl)-1H-1,2,3-triazole-4-carboxylate (L1) have been synthesized and structurally characterized by SCXRD (Single Crystal X-Ray Difraccion), PXRD (Power X-Ray Difracction), FT-IR (Fourier Transform Infrared), TG (Theermo Gravimetric), and electrochemical techniques. Both CPs were obtained at the water\/n-butanol interface by reacting nitrate salts of each metal with the NaL1 ligand. SCXRD analysis revealed that CP1 (Coordination Polymer 1) and CP2 (Coordination Polymer 2) crystallize in the monoclinic space groups C2\/c (No. 15) and P21\/n (No. 14), respectively, forming 1D zigzag chain structures, which further lead to a 2D supramolecular network through O-H\u22efO and C-H\u22efO hydrogen bond interactions, respectively. In CP1, the supramolecular structure is assembled by hydrogen bonds involving water molecules. In contrast, CP2 forms its supramolecular network mainly through hydrogen bonds between adjacent triazole ligand molecules. Hirshfeld surface analysis revealed that the most significant contributions to the crystal packing come from H\u22efO\/O\u22efH, H\u22efH, H\u22efN\/N\u22efH, and H\u22efC\/C\u22efH interactions. In addition, FT-IR provided information on the functional groups involved in the coordination, while the decomposition patterns of both CPs were evaluated by TGA. Electrochemical studies conducted in a saline environment showed that CP1 exhibits superior hydrogen evolution reaction (HER) kinetics compared to CP2, as evidenced by a higher exchange current density and a lower Tafel slope. Density functional theory calculations and experimental bandgap measurements provided a deeper understanding of the electronic properties influencing the electrochemical behavior. The results highlight the potential of CP1 as an efficient catalyst for HER under saline conditions.<\/jats:p>","DOI":"10.3390\/ijms26041671","type":"journal-article","created":{"date-parts":[[2025,2,17]],"date-time":"2025-02-17T03:41:47Z","timestamp":1739763707000},"page":"1671","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Synthesis, Crystal Structures, Hirshfeld Surface Analysis, Computational Investigations, Thermal Properties, and Electrochemical Analysis of Two New Cu(II) and Co(II) Coordination Polymers with the Ligand 5-Methyl-1-(pyridine-4-yl-methyl)-1H-1,2,3-triazole-4-carboxylate"],"prefix":"10.3390","volume":"26","author":[{"given":"Markus","family":"Bergedahl","sequence":"first","affiliation":[{"name":"Departamento de Qu\u00edmica, Facultad de Ciencias B\u00e1sicas, Universidad de Antofagasta, Casilla 170, Antofagasta 1240000, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pilar","family":"Narea","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, Facultad de Ciencias B\u00e1sicas, Universidad de Antofagasta, Casilla 170, Antofagasta 1240000, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0804-3166","authenticated-orcid":false,"given":"Jaime","family":"Llanos","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, Facultad de Ciencias, Universidad Cat\u00f3lica del Norte, Avda. Angamos 0610, Antofagasta 1270709, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruth","family":"Pulido","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, Facultad de Ciencias B\u00e1sicas, Universidad de Antofagasta, Casilla 170, Antofagasta 1240000, Chile"},{"name":"Instituto Universitario de Ciencia de Materiales \u201cNicol\u00e1s Cabrera\u201d (INC), Universidad Aut\u00f3noma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0949-277X","authenticated-orcid":false,"given":"Nelson","family":"Naveas","sequence":"additional","affiliation":[{"name":"Instituto Universitario de Ciencia de Materiales \u201cNicol\u00e1s Cabrera\u201d (INC), Universidad Aut\u00f3noma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain"},{"name":"Departamento de F\u00edsica Aplicada, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Departamento de Ingenier\u00eda Qu\u00edmica y Procesos de Minerales, Universidad de Antofagasta, Avenida Angamos 601, Antofagasta 1270300, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1952-1020","authenticated-orcid":false,"given":"Pilar","family":"Amo-Ochoa","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Inorg\u00e1nica, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Institute for Advanced Research Chemistry (IAdChem), Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7529-5120","authenticated-orcid":false,"given":"F\u00e9lix","family":"Zamora","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Inorg\u00e1nica, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Condensed Matter Physics Center (IFIMAC), Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3970-2387","authenticated-orcid":false,"given":"Gerz\u00f3n E.","family":"Delgado","sequence":"additional","affiliation":[{"name":"Laboratorio de Cristalograf\u00eda, Departamento de Qu\u00edmica, Facultad de Ciencias, Universidad de Los Andes, M\u00e9rida 5101, Venezuela"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1347-3726","authenticated-orcid":false,"given":"Felipe M.","family":"Galleguillos Madrid","sequence":"additional","affiliation":[{"name":"Centro de Desarrollo Energ\u00e9tico de Antofagasta, Universidad de Antofagasta, Av. 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