EFFECT OF SOLVENT UPON COMPETITIVE LIQUID-LIQUID-EXTRACTION OF ALKALI-METAL CATIONS BY ISOMERIC DIBENZO-16-CROWN-5-OXYACETIC ACIDS

Authors
WALKOWIAK W JEON EG HUH H BARTSCH RA
Citation
W. Walkowiak et al., EFFECT OF SOLVENT UPON COMPETITIVE LIQUID-LIQUID-EXTRACTION OF ALKALI-METAL CATIONS BY ISOMERIC DIBENZO-16-CROWN-5-OXYACETIC ACIDS, Journal of inclusion phenomena and molecular recognition in chemistry, 12(1-4), 1992, pp. 213-222
Citations number
16
Journal title
Journal of inclusion phenomena and molecular recognition in chemistry → ACNP
ISSN journal
09230750
Volume
12
Issue
1-4
Year of publication
1992
Pages
213 - 222
Database
ISI
SICI code
0923-0750(1992)12:1-4<213:EOSUCL>2.0.ZU;2-1
Abstract
The selectivity and efficiency of competitive liquid-liquid extraction of alkali metal cations into organic solvents containing sym-(octyl)d ibenzo-16-crown-5-oxyacetic acid (2) and sym-bis[4(5)-tertbutylbenzo]- 16-crown-5-oxyacetic acid (3) have been determined. Solvents examined include: dichloromethane, chloroform, carbon tetrachloride, 1,2-dichlo roethane, 1,1,1-trichloroethane, benzene, toluene, p-xylene, chloroben zene, 1,2-dichlorobenzene, and 1,2,3,4-tetrahydronaphthalene. The Na+/ K+ and Na+/Li+ extraction ratios are highest in chloroform. The extrac tion selectivity is found to correlate with the diluent parameter (DP) of the organic solvent.