Synthesis and metal ion binding properties of thiaaza crown macrocycles.
Two new macrocyclic ligands (3) and (4), containing nitrogen-sulfur donor atoms, were designed and synthesized in a multi-step reaction sequence. The macrocycles (3) and (4) were used in solvent extraction of metal picrates such as Ag(+), Hg(2+), Cd(2+), Zn(2+), Cu(2+), Ni(2+), Mn(2+), Co(2+), and Pb(2+) from aqueous phase to the organic phase. The metal picrate extractions were investigated at 25+/-0.1 degrees C by using UV-visible spectrometry. The extractability and selectivity of the mentioned metal picrates were evaluated according to the organic solvents. The values of the extraction constants (logK(ex)) and the complex compositions were determined for the extracted complexes.
Alp
Hakan
H
Department of Chemistry, Faculty of Arts & Sciences, Giresun University, 28049 Giresun, Turkey.
Gök
Halil Zeki
HZ
Kantekin
Halit
H
Ocak
Ummühan
U
D001372:Aza Compounds / Q000737:chemistry*; D047248:Crown Compounds / Q000737:chemistry*; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008670:Metals / Q000737:chemistry*; D012997:Solvents; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared
D001372:Aza Compounds; D047248:Crown Compounds; D008024:Ligands; D008670:Metals; D012997:Solvents