Complexation of metal ions with the novel 2-hydroxy-1-naphthaldehyde-derived diamine Schiff base carrying a macrobicyclic moiety with N2O2S2 mixed donor in acetonitrile-dichloromethane

BASOGLU A., PARLAYAN S., OCAK M., ALP H., KANTEKİN H., OZDEMIR M., ...More

POLYHEDRON, vol.28, no.6, pp.1115-1120, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 6
  • Publication Date: 2009
  • Doi Number: 10.1016/j.poly.2009.01.035
  • Journal Name: POLYHEDRON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1115-1120
  • Karadeniz Technical University Affiliated: Yes

Abstract

A new Schiff base containing a macrobicyclic moiety was designed and synthesized by reaction of the corresponding macrobicyclic diamine compound and 2-hyclroxy-1-naphthaldehyde. The influence of metal cations such as Zn2+, Mn2+, Fe2+, Fe3+, Co2+, Ni2+ and Pb2+ on the spectroscopic properties of the 2-hydroxy-1-naphtyl group linked to the macrobicyclic moiety with N202S2 mixed donor was investigated in acetonitrile-dichloromethane solution (9.5/0.5) by means of absorption and emission spectrometry. Emission spectra undergo a marked blue shift and enhancement of naphtyl fluorescene in the presence of Fe3+ and Zn2+. The presence of Pb2+, Mn2+, Fe2+, Co2+ and Ni2+ caused a quenching of naphtyl fluorescence. Especially, the quenching was higher than 90% in case of the interaction of Ni2+ and the ligand. The results of spectrophotometric and spectrofluorimetric titration experiments disclosed the complexation properties of the novel ligand with Zn2+, Co2+ and Ni2+ cations. (C) 2009 Elsevier Ltd. All rights reserved.