Abstract
The synthesis and the binding properties of novel phthalonitrile derivatives 1-3 towards metal cations have been described in this paper. The complexation and extraction of some transition and heavy metal cations have been followed by UV-visible spectrophotometry absorption in methanol. The conductivity studies have been used in order to confirm complex’s stoichiometries. The treatment of UV spectra by digital program showed the formation of ML (with ML2 in some cases) (M=metal, L=ligand) species. Beyond the discussion of the stability profiles of complexes particular attention is paid to the selectivity towards Cu2+ in the 1st sequence of transition metal cations and towards Hg2+ in the sequence of heavy metal cations.
Highlights
Since a long time, pharmaceutical industry required green chemistry to find new compounds able to copy the metalloenzymes and to find a better way to mimic their reactions
Phthalonitriles are known as good candidates for the complexation of metal cations
As a continuation of our interests in phthalonitriles [13,14,15], we report here the synthesis, complexation and extraction properties of novel phthalonitriles 1-3 towards transition and heavy metal cations
Summary
Pharmaceutical industry required green chemistry to find new compounds able to copy the metalloenzymes and to find a better way to mimic their reactions. Continuous challenge of researches is devoted in this way to create new and efficient complexes. Phthalonitriles are known as good candidates for the complexation of metal cations. They are thermally stable with high performance composite structures. They constitute a class of high-temperature polymers that has a number of exceptional properties such as outstanding thermal and thermo-oxidative stability, good moisture resistance and superior fire resistance. As a continuation of our interests in phthalonitriles [13,14,15], we report here the synthesis, complexation and extraction properties of novel phthalonitriles 1-3 towards transition and heavy metal cations. The liquid‐liquid extraction of metallic picrate salts by ligands 1‐3 were followed from water into dichloromethane
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