Studies on Tetramethyldithizone Isomers and Their Reactions with Metal Ions

Autor:	A. M. Kiwan, F. M. Hassan, W. Hamdan
Rok vydání:	1989
Předmět:	Chemistry Metal ions in aqueous solution Extraction (chemistry) Inorganic chemistry General Chemistry Metal chemistry.chemical_compound Liquid–liquid extraction Phase (matter) visual_art visual_art.visual_art_medium Chelation Dithizone Nuclear chemistry
Zdroj:	Bulletin of the Chemical Society of Japan. 62:325-329
ISSN:	1348-0634 0009-2673
DOI:	10.1246/bcsj.62.325
Popis:	Six bis(dimethylphenyl) analogues of dithizone are prepared, characterized and their reactions with metal ions in a two phase system are reported. The extraction equilibria of their complexes with Cd(II), Co(II), Hg(II), Pb(II), Tl(I), Zn(II), and Bi(III) as well as their spectral characteristics are described. Complete extraction of these metal chelates requires higher pH’s than those needed for the unsubstituted dithizone. The molar absorptivities of Bi(III) complexes with bis(3,4-dimethylphenyl)-, and bis(3,5-dimethylphenyl) analogues are higher than the corresponding value of Bi(III) dithizonate. The molar absorptivities of Cu(II) and Hg(II) (in CCl4) complexes with bis(3,5-dimethylphenyl) analogue are also higher than the corresponding values of the unsubstituted dithizone complexes.
Databáze:	OpenAIRE
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