SPECTROPHOTOMETRIC STUDY OF COMPLEX FORMATION BETWEEN SOME ALKALI AND ALKALINE EARTH CATIONS AND SEVERAL CONVENTIONAL (N,N), (N,O) AND (O,O) LIGANDS IN 95% ETHANOL
Titel:
SPECTROPHOTOMETRIC STUDY OF COMPLEX FORMATION BETWEEN SOME ALKALI AND ALKALINE EARTH CATIONS AND SEVERAL CONVENTIONAL (N,N), (N,O) AND (O,O) LIGANDS IN 95% ETHANOL
Auteur:
Ghasemi, Jahanbakhsh Shamsipur, Mojtaba
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 28 (1993) nr. 3-4 pagina's 231-236
Jaar:
1993-06-01
Inhoud:
The complexation of Li+, Na+, Mg2+ and Ca2+ with 1,10-phenanthroline, 2,2'-bipyridine, 1,2-phenylenediamine, 2-aminopyridine, 8-hydroxyquinoline, catechol and ethylene glycol was studied in 95% ethanol by means of a competitive spectrophotometric method using murexide as indicator. Formation constants of 1:1 conplexes were determined. In the case of all ligands used, the stability of the complexes was found to vary in the order Mg2+ > Ca2+ > Li+ > Na+. It was found that the structure influences the formation and stability of resulting complexes. Effects of various parameters on complexation are discussed.
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