The synthesis and characterization of a novel (E,E)-dioxime and its mono- and heterotrinuclear complexes containing an 18-membered dioxadithiadiazamacrocycle

Kantekin H. , SAHINBAS H., OCAK U. , GOK Y.

JOURNAL OF COORDINATION CHEMISTRY, vol.56, no.3, pp.193-202, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 3
  • Publication Date: 2003
  • Doi Number: 10.1080/0095897021000050969
  • Title of Journal : JOURNAL OF COORDINATION CHEMISTRY
  • Page Numbers: pp.193-202

Abstract

The novel (EE)-dioxime, 5,6:17,18-dibenzo-11,12-(4'-nitrobenzo)-2,3-bis(hydroxyimino)-7,16-dithia-10,13-dioxa-1,4-diazacyclooctadecane) (H2L), has been synthesized from reaction of (EE)-dichloroglyoxime (1) with 2,3:14,15-dibenzo 8,9-(4'-nitrobenzo)-4,13-dithia-7,10-dioxa-1,16-diazahegzadecane (2). The mononuclear Co(III) complex (4) of this dioxime was prepared by oxidation of the cobalt (11) complex. The BF2+-capped Co(III) complex (5) was synthesized by using a precursor Co(III) complex and boron trifluoride dietherate. The heterotrinuclear complexes (6) and (7) were prepared by reaction of (5) with NiCl2 . 6H(2)O and CdCl2 . H2O, respectively. In addition, the homotrinuclear Cu(II) complex (8), has also been prepared by the reaction of this dioxime with CuCl2 . H2O. The structures of the dioxime and its complexes were identified by using elemental analysis, H-1- and C-13-NMR, IR, and mass spectral data.