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Macrocyclic polythiaethers as solvent extraction reagents—III

1980; Pergamon Press; Volume: 42; Issue: 6 Linguagem: Inglês

10.1016/0022-1902(80)80462-3

1878-1225

D. Sevdić, Ladislav Fekete, Henrika Meider,

Inorganic and Organometallic Chemistry

Macrocyclic polythiaethers 1,4,8,11-tetrathiacyclotetradecane (TTP) and 1,4,7,10,13,16-hexathiacyclooctadecane (HTO) have been used for mercury(II) and silver(I) picrate extraction and complex formation studies. The equilibrium constants which characterize the extraction and ionization of complexes have been calculated. The extraction mechanism has been discussed. The complexes Ag(TTP)Pic, Ag2(TTP)Pic2, Ag(HTO)Pic, Ag2(HTO)Pic2, Ag3(HTO)Pic3, Hg(TTP)Pic2 and Hg(HTO)Pic2 have been isolated and characterized. On the basis of the elemental analyses, conductivity measurements, equilibrium constants and IR spectra the mode of coordination has been proposed.