Synthesis and structural studies of novel Cu(II) complexes with hydroxy derivatives of benzo[b]furan and coumarin

• Published in: Polyhedron Vol. 43; no. 1; pp. 71 - 80
• Main Authors: Drzewiecka, Aleksandra, Koziol, Anna E., Klepka, Marcin T., Wolska, Anna, Przybylinska, Hanka, Jimenez-Pulido, Sonia B., Ostrowska, Kinga, Struga, Marta, Kossakowski, Jerzy, Lis, Tadeusz
• Format: Journal Article
• Language: English
• Published: OXFORD Elsevier Ltd 13.08.2012; Elsevier
• Subjects: Benzo[b]furan derivative; Chemistry; Chemistry, Inorganic & Nuclear; Coumarin derivative; Crystal structure; Crystallography; Cu(II) complex; Physical Sciences; Science & Technology; XAS study; Cu(II) complex; Coumarin derivative; Benzo[b]furan derivative; XAS study; Crystal structure; COPPER-COMPLEXES; ACID; RAY CRYSTAL-STRUCTURES; CYTOTOXIC ACTIVITY; ANTIMICROBIAL ACTIVITY
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2012.05.042

The Cu(II) cation is four- coordinated in five complexes with the hydroxy derivatives of benzo[b]furan and coumarin. The complexes have been studied by the XAFS analysis and the X-ray crystallography. [Display omitted] ► Electrochemical synthesis of Cu(II) complexes with hydroxy derivatives of benzo[b]furan and coumarin. ► Metal–ligand interactions were studied by X-ray crystal structure analysis and X-ray absorption spectroscopy. ► Five mononuclear complexes were obtained; four with benzo[b]furan ligands and one with hydroxycoumarin. ► In all the complexes Cu(II) is chelated by two anionic ligands and the CuO4 environment shows a square-planar geometry. A series of new Cu(II) complexes with the hydroxy derivatives of benzo[b]furan and coumarin have been electrochemically synthesized. The geometry of the metal–ligand interaction has been described using the single crystal X-ray diffraction method and X-ray absorption spectroscopy. Two ligands are bonded to the metal cation via the acetyl and deprotonated hydroxyl O atoms. The centrosymmetric coordination polyhedron of Cu(II) exhibits a square-planar geometry (CuO4), with both ligands coordinating in the chelating mode.