Synthesis and characterization of a new (E,E)-dioxime and its mono and polynuclear complexes containing a 14-membered dithiadiaza macrocyclic moiety

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Gök Y., Bilgin A., Ertem B., Dilber G., Sağlam M. B.

JOURNAL OF COORDINATION CHEMISTRY, vol.57, no.10, pp.883-891, 2004 (SCI-Expanded)

  • Publication Type: Article / Article
  • Volume: 57 Issue: 10
  • Publication Date: 2004
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.883-891
  • Karadeniz Technical University Affiliated: Yes


A novel (E,E)-dioxime,5,6:13,14-di(40-t-butylbenzo)-2,3-bis(hydroxyimino)-8,11-dithia-1,4-diazacyclotetrade-cane (H2L), containing a 14-membered dithiadiaza macrocyclic unit has been synthesized by the reactionof 1,2-bis(4-t-butyl-2-aminobenzylthio)ethane (1) and cyanogendi-N-oxide (2). A mononuclear nickel(II) com-plex (3) with a metal : ligand ratio of 1 : 2 was also prepared. A heterotrinuclear complex [Cu2Ni(HL)2](PF6)2(4) was synthesized by using the mononuclear complex3and [Cu(CH3CN)4]PF6. A heteropentanuclear com-plex [Cu2(UO2)2(phen)2Ni(HL)2](PF6)2(NO3)2(5) containing the oximato tetraanion as a bridging ligand and1,10-phenanthroline as an end-capping ligand was obtained by using the heterotrinuclear ligand for theCu2Ni(HL)nþ2center. The ligand and its complexes have been characterized by1H and13C NMR, IR andmass spectroscopy, elemental analysis and semiempirical quantum chemical calculations.