Collect. Czech. Chem. Commun. 1991, 56, 905-915

Novel carrier molecules: lipophilic ammonium ylides for membrane transport of metal picrates

Vladimír Krála, Juraj Koudelkaa, Helena Mohylováb and David Šamana

a Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
b Bateria, 274 01 Slaný


The novel artificial carriers have been synthesized by introduction of lipophilic group of pyrrolidinomalonaldehyde and N-imidazolylmalonaldehyde.. These stable dipolar synthetic carriers were used for transport of metal picrates through a liquid membranes. The cation specificity of the transport was determined by the means of atomic absorption spectroscopy. Carrier properties of ylides were compared with N,N-dimethyldodecylamine N-oxide and DB18C6. The formation of complexes of ylides with some inorganic salts by the means of NMR spectroscopy, X-ray and potentiometric measurements of KS have been studied.