title: Synthesis, characterization and structure effects on extractability and selectivity of N,N'-bis(salicylaldehydene)-1,4-bis-(m-aminophenoxy)butane towards some divalent cations.
abstract: The extraction of copper(II), nickel(II) and cobalt(II) from the aqueous phase with N,N'-bis(salicylaldehydene)-1,4-bis-(m-aminophenoxy)butane (MAS), which was synthesized from 1,4-bis(m-aminophenoxy)butane and salicylaldehyde, was studied. Microanalytical data, elemental analysis, UV-visible 1H and 13C n.m.r. spectra and IR-spectra were used to confirm the structures. The extractability and selectivity of divalent cations were evaluated as a function of relationship between distribution ratio of the metal and pH or ligand concentration. Cu+2 showed the highest extractability and selectivity at pH 6.0, whereas Ni+2 and Co+2 showed at pH 9.2. The stoichiometries of the compounds formed were estimated to be CuL, CoL, NiL, where L is N,N'-bis(salicylaldehydene)-1,4-bis-(m-aminophenoxy)butane. It was concluded that MAS can effectively be used in solvent extraction of copper(II), nickel(II) and cobalt(II) from the aqeous phase to the organic phase.
authors: Faculty of Arts and Sciences, Chemistry Department, Dicle University, Diyarbakir, Turkey.
authors: Berrin
authors: B
authors: Ziyadanoğullari
authors: Deniz
authors: D
authors: Ceviziçi
authors: Hamdi
authors: H
authors: Temel
authors: Remziye
authors: R
authors: Guzel
mesh_terms: D002073:Butanes / Q000138:chemical synthesis*; D002413:Cations, Divalent / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008024:Ligands; D019216:Metals, Heavy / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D009930:Organic Chemicals / Q000737:chemistry; D012997:Solvents / Q000737:chemistry*; D013053:Spectrophotometry; D014867:Water / Q000737:chemistry
chemical_list: D002073:Butanes; D002413:Cations, Divalent; D008024:Ligands; D019216:Metals, Heavy; C523729:N,N'-bis(salicylaldehydene)-1,4-bis-(m-aminophenoxy)butane; D009930:Organic Chemicals; D012997:Solvents; D014867:Water; D003035:Cobalt; D003300:Copper; D009532:Nickel