Abstract
The extraction of copper(II) from methanolic lithium chloride solutions by bis(3,5,5-trimethylhexyl)ammonium chloride dissolved in benzene has been studied at both high and low copper concentrations. At high concentrations a solid complex has been isolated and shown to have the stoichiometry (RH) 2CuCl 4 which contains the tetrahedral tetrachlorocuprate(II) ion. At low concentrations equilibrium studies suggest the formation of species of the mixed dimer type such as (RH) 2CuCl 4·RHCl and (RH) 2CuCl 4·2RHCl. The distribution of bis(3,5,5-trimethylhexyl)ammonium chloride itself between the methanol phase and benzene has also been studied, along with the aggregation of the amine hydrochloride salt in benzene.
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