Syntheses, supramolecular architectures and photoluminescence properties of Zn(II) complexes based on 3,5‑dihydroxybenzoic and pyridine/pyrazole derived ligands

Miguel Guerrero, Roger Pou, Laura Bayés-García, Mercè Font-Bardia, Jordi Sort, Josefina Pons, José A. Ayllón

Research output: Contribution to journalArticleResearch

3 Citations (Scopus)

Abstract

© 2018 Elsevier B.V. Five new coordination compounds [Zn(μ‑3,5‑DHB)2(H2O)2]n (1a), [Zn(μ‑3,5‑DHB)(μ‑OH2)(H2O)2]n·(3,5‑DHB)n·(4H2O)n (1b), [Zn(3,5‑DHB)2(Isna)2]·2H2O (2), [Zn(3,5‑DHB)2(4‑Acpy)2]·3H2O (3) and [Zn(3,5‑DHB)2(3‑Mepz)2]·H2O (4) (3,5‑HDHB = 3,5‑dihydroxybenzoic, Isna = isonicotinamide, 4‑Acpy = 4‑acetylpyridine and 3‑Mepz = 3‑methylpyrazole) were synthesized in water or water-methanol as solvents. All these compounds have been characterized by elemental analysis, FTIR-ATR and 1H NMR spectroscopies and Powder X-ray diffraction (PXRD). For compounds 1b–4, X-ray crystal structures have been determined. In these compounds, 3,5‑DHB ligand displays different coordination modes. Complex 1b is a coordination polymer, while the addition of the pyridine/pyrazole ligands in the reaction provokes the formation of monomeric compounds (2–4). Moreover, the crystal packing indicates that these complexes expand into 2D/3D network structures mainly by intermolecular hydrogen bond interactions. Finally, the photoluminescent properties of these complexes in solid state have also been investigated. The strong emission observed for 1b indicates that it may be a good candidate for photoluminescent devices.
Original languageEnglish
Pages (from-to)34-38
JournalInorganic Chemistry Communications
Volume96
DOIs
Publication statusPublished - 1 Oct 2018

Keywords

  • Coordination polymer
  • N-heterocyclic ligands
  • Photoluminescence properties
  • Supramolecular network
  • Zn(II) complexes

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