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Use of 1-alkyl-3-methylimidazolium Hexafluorophosphate Room Temperature Ionic Liquids as Chelate Extraction Solvent With 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione

Use of 1-alkyl-3-methylimidazolium Hexafluorophosphate Room Temperature Ionic Liquids as Chelate Extraction Solvent With 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione

Naoki Hirayama, Mika Deguchi, Hitomi Kawasumi, Takaharu Honjo

Talanta. 2005 Jan 15;65(1):255-60.

PMID: 18969792

Abstract:

Possible use of room temperature ionic liquids (RTILs) as chelate extraction solvent was evaluated by using 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF(6)]), 1-hexyl-3-methylimidazolium hexafluorophosphate ([hmim][PF(6)]) and 1-octyl-3-methylimidazolium hexafluorophosphate ([omim][PF(6)]). These RTILs showed high extraction performance for divalent metal cations with 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione (Htta). The extracted metals were back-extracted into 1moldm(-3) nitric acid quantitatively. Furthermore, the extracted species were estimated as neutral hydrated complexes M(tta)(2)(H(2)O)(n) (n= 1 or 2) for M = Ni, Cu and Pb and anionic complexes M(tta)(3)(-) for M = Mn, Co, Zn and Cd.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP304680351	1-Hexyl-3-methylimidazolium hexafluorophosphate		304680-35-1	Price

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