Synthesis, crystal structures and antimicrobial properties of copper(II)-thiophene-2,5-dicarboxylate complexes with N-donor ligands


POLYHEDRON, vol.39, no.1, pp.14-24, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1016/j.poly.2012.03.027
  • Journal Name: POLYHEDRON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.14-24
  • Keywords: Thiophene-2,5-dicarboxylic acid, Thiophene-2,5-dicarboxylate complexes, Copper(II) complexes, Ethylenediamine derivatives, Antimicrobial activities, METAL-ORGANIC FRAMEWORKS, THIOPHENE-2,5-DICARBOXYLIC ACID, COORDINATION POLYMERS, COPPER(II) COMPLEXES, 1,10-PHENANTHROLINE, PHOTOLUMINESCENCE, LAYERS
  • Anadolu University Affiliated: No


Eight new copper(II)-thiophene-2,5-dicarboxylate (tdc) complexes with N-methylethylenediamine (nmen), [Cu(H2O)(2)(nmen)(2)](tdc) (1), N,N-dimethylethylenediamine (nnen), [Cu(tdc)(nnen)(2)]center dot H2O (2), N,N'-dimethylethylenediamine (dmen), [Cu(mu-tdc)(H2O)(dmen)](n) (3), N,N,N',N'-tetramethylethylenediamine (tmen), {[Cu(mu-tdc)(tmen)(2)]center dot H2O}(n) (4), N-ethylethylenediamine (neten), trans-[Cu(H2O)(2)(neten)(2)](tdc)center dot 2H(2)O (5), N,N'-diethylethylenediamine (deten), trans-[Cu(H2O)(2)(deten)(2)](tdc) (6), N,N-diethylethylenediamine (eten), [Cu(mu-tdc)(eten)](n), (7), and N-methyl-1,3-propanediamine (nmpen), [Cu(tdc)(nmpen)(2)] (8), have been synthesized and characterized by elemental analyses, magnetic moments, thermal analyses (TG, DTG and DTA), UV-Vis and IR spectra. The crystal structures of 2, 3, 5 and 7 were determined by single crystal X-ray diffraction studies. In 1, 5 and 6, the Cu(II) ions are coordinated by two aqua ligands and four nitrogen atoms of nmen, neten and deten, respectively and thiophene-2,5-dicarboxylate (tdc) acts as a counterion. In 2, 4 and 8, tdc coordinates to the Cu(II) ions through the oxygen atom of the carboxylate group as a monodentate ligand, and the distorted square pyramidal geometries of the Cu(II) ions of 2, 4 and 8 are completed by the nnen, tmen and nmpen ligands, respectively, which act as bidentate ligands. In 3 and 7, the tdc ligand exhibits tridentate-mu(2) and tetradentate-mu(2) bridging modes, being coordinated through three and four carboxylate oxygens atoms, respectively. The crystal packing of the complexes is a composite of intermolecular hydrogen bonding interactions. Furthermore, in vitro antimicrobial activities of these complexes were tested against selected wild type microorganisms using MIC methods. (C) 2012 Elsevier Ltd. All rights reserved.