Synthesis and metal-ion binding properties of new N2S4O2- and N2S5O2-donor macrocycles

Kantekin H., Bakaray A., Ocak M., Alp H., Ocak U.

SEPARATION SCIENCE AND TECHNOLOGY, vol.42, no.14, pp.3243-3257, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 14
  • Publication Date: 2007
  • Doi Number: 10.1080/01496390701513396
  • Journal Name: SEPARATION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3243-3257
  • Karadeniz Technical University Affiliated: Yes

Abstract

Synthetic procedures for new mixed-donor macrocycle compounds were reported. The macrocyclic compounds were used in solvent extraction metal picrates such as Ag+, Hg2+, Cd2+, Zn2+, Cu2+, Ni2+, Mn2+, Pb2+, and Co2+. The metal picrate extractions were investigated at 25 +/- 0.18 degrees C with the aid of UV-visible spectrometry. It was found that 6,7,9,10,12,13,23,24-octahydro-19H,26Hdibenzo[ h,t](1,4,7,13,16,22,10,19) dioxatetrathiadiazasiclotetracosine-20,27(21H,28H)dione showed selectivity towards Ag+, Hg2+, and Cd2+ among the other metals. The extraction constants (Log K-ex) and complex compositions were determined for the Ag+ and Hg2+ complexes for this compound and 9,10,12,13,23,24,26,27,29,30-decahydro-5H,15H-dibenzo-[h,w][1,4,7,13,16,19,25-,10,22] dioxapentathiadiazacycloheptacosine-6,16(7H,17H)-dione.