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
Authors:
- 1 June 1993
- journal article
- research article
- Published by Taylor & Francis in Journal of Coordination Chemistry
- Vol. 28 (3-4) , 231-236
Abstract
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.Keywords
This publication has 16 references indexed in Scilit:
- Coordination chemistry of alkali and alkaline-earth cations with macrocyclic ligandsJournal of Chemical Education, 1985
- Thermodynamics of formation of magnesium, calcium, strontium and barium complexes with 2,2'-bipyridyl and 1,10-phenanthroline, at different ionic strengths in aqueous solutionTalanta, 1985
- Thermodynamic and kinetic data for cation-macrocycle interactionChemical Reviews, 1985
- Influence of secondary ligands on the stability of metal–xanthosine complexes in solutionJ. Chem. Soc., Dalton Trans., 1985
- Multinuclear NMR study of 2,2′-bipyridine complexes with alkali cations in nonaqueous solventsInorganica Chimica Acta, 1981
- Tilden Lecture. The biochemistry of sodium, potassium, magnesium, and calciumQuarterly Reviews, Chemical Society, 1970
- Cyclic polyethers and their complexes with metal saltsJournal of the American Chemical Society, 1967
- Pyridinderivate als Komplexbildner V. Die Metallkomplexe von 1,10‐Phenanthrolin und α, α′‐DipyridylHelvetica Chimica Acta, 1963
- Polarography in Acetonitrile.1 I. Metal Ions which Have Comparable Polarographic Properties in Acetonitrile and in WaterJournal of the American Chemical Society, 1957
- Studies on Coördination Compounds. IX. The Solution Stabilities of the Chelate Compounds of a Number of Organic LigandsJournal of the American Chemical Society, 1954