Synthesis and characterization of three new Cu(II) paddle-wheel compounds with 1,3-benzodioxole-5-carboxylic acid

Francisco Sánchez-Férez, Joan Soldevila-Sanmartín, José A. Ayllón, Teresa Calvet, Mercè Font-Bardia, Josefina Pons

Research output: Contribution to journalArticleResearchpeer-review

9 Citations (Scopus)

Abstract

Three different paddle wheel compounds have been synthesized, each one via a different synthetic pathway. The first method is the reaction of Cu(MeCO 2) 2·H 2O with 1,3-benzodioxole-5-carboxylic acid (Piperonylic acid, HPip) in a MeOH solution, yielding [Cu(µ-Pip) 2(MeOH)] 2 (1). The second method is the transformation of the heteroleptic core paddle-wheel compound [Cu(µ-MeCO 2)(µ-Pip)(MeOH)] 2 into the homoleptic core paddle-wheel [Cu(µ-Pip) 2(DMSO)] 2·2DMSO (2). Lastly, the third method is the substitution of the solvent molecule (DMF) present in the molecular array [Cu(µ-Pip) 2(DMF)] 2 by 2-benzylpyridine (2-Bzpy) ligand, resulting in [Cu(µ-Pip) 2(2-Bzpy)] 2·2.5MeOH·H 2O (3a). All compounds are characterized via EA, PXRD, ATR-FTIR, Far-IR and UV–Vis spectroscopy. For all three compounds, the X-ray crystal structure has been determined and their extended structures are discussed. Finally, TG/DTA measurements have been recorded.

Original languageEnglish
Pages (from-to)64-73
Number of pages10
JournalPolyhedron
Volume164
DOIs
Publication statusPublished - 15 May 2019

Keywords

  • 1,3-Benzodioxole-5-carboxylic acid
  • Cu(II) complexes
  • Paddle-wheel compounds
  • Supramolecular structure
  • Synthetic pathways

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