Study of formation equilibria of the complexes of some metal cations with polyoxa macrocyclic ligands

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Anal. Lett.; (United States)

DOI:https://doi.org/10.1080/00032718408065356· OSTI ID:5847294

Luca, C; Hassan, A A

The complexes formed by the Na/sup +/, K/sup +/, Rb/sup +/, Ca/sup 2 +/, UO/sub 2//sup 2 +/, and Ag/sup +/ cations with the macrocyclic polyethers 18-crown-6, benzo-15-crown-5, and dicyclohexyl-18-crown-6 are investigated. The stability constants of these complexes have been determined potentiometrically in (90% vol.) ethanol-water solutions at 25/sup 0/C and an ionic strength ..mu.. = 0.1 (achieved with tetrabutylammonium perchlorate). The stability of the investigated complexes was interpreted in terms of caging the metal cation into the cavity of the macrocyclic ligand, an effect which depends on the ratio of the diameter of the complexed cation over the diameter of the cavity of the complexing ligand.

• Research Organization: Polytechnic Institute of Bucharest, Romania
• OSTI ID: 5847294
• Journal Information: Anal. Lett.; (United States), Journal Name: Anal. Lett.; (United States) Vol. 17:A17; ISSN ANALB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400700* -- Radiochemistry & Nuclear Chemistry
ACTINIDE COMPOUNDS
ALCOHOLS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
DATA
EXPERIMENTAL DATA
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
KINETICS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENE GLYCOLS
POLYMERS
POTASSIUM COMPOUNDS
REACTION KINETICS
RUBIDIUM COMPOUNDS
SILVER COMPOUNDS
SODIUM COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
URANYL COMPOUNDS