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

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Abstract

© 2019 Elsevier Ltd Three different paddle wheel compounds have been synthesized, each one via a different synthetic pathway. The first method is the reaction of Cu(MeCO2)2·H2O 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-MeCO2)(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·H2O (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
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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