[Cu(μ-MeCO<inf>2</inf>)<inf>2</inf>(4-Bzpy)]<inf>2</inf> (4-Bzpy = 4-benzylpyridine): Study of the intermolecular C–H⋯O hydrogen bonds at two temperatures

Joan Soldevila-Sanmartín, Marta Sanchez-Sala, Teresa Calvet, Mercè Font-Bardia, José A. Ayllón, Josefina Pons

Research output: Contribution to journalArticleResearch

8 Citations (Scopus)


© 2018 Elsevier B.V. [Cu(μ-MeCO2)2(4-Bzpy)]2 (4-Bzpy = 4-benzylpyridine) has been synthesized by reaction of [Cu(μ-MeCO2)2(H2O)]2 with 4-Bzpy in methanol at room temperature. The compound was characterized by Elemental Analysis, ATR-FTIR and X-ray Powder Diffraction. The molecular structure was determined by single crystal X-ray diffraction analysis at 100 K and 303 K. The compound consists of binuclear units where both Cu(II) atoms are linked by four syn-syn carboxylate bridges, showing a paddle-wheel unit. The role of C–H⋯O hydrogen bonds in the establishment of its supramolecular network is discussed, comparing the resulting structural parameters at the two different temperatures. Finally, the thermal variation of XpT for compound 1 has also been studied, suggesting an antiferromagnetic Cu⋯Cu interaction (J = −311 cm−1), which agrees with the presence of four μ-κO-κO′ carboxylates bridging the metallic centers in the binuclear complex.
Original languageEnglish
Pages (from-to)808-814
JournalJournal of Molecular Structure
Publication statusPublished - 5 Nov 2018


  • Cu(II) acetate
  • Cu(II) paddle-wheel
  • C–H⋯O hydrogen bond
  • Pyridine ligands
  • Supramolecular network

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