Metal ion complexation by ionic crown ethers. Progress report

Technical Report · Thu Jan 08 04:00:00 EST 1981

OSTI ID:6590653

Bartsch, R A

During the first nine months of this DOE-funded project, progress had been made in two areas: the synthesis of crown ethers which contain pendant ionizable functionality; and, the selectivity and efficiency of solvent extraction of alkali metal cations from water into chloroform by a crown ether carboxylic acid. Preparative routes have been established for several novel crown ether compounds which possess a carboxylic acid group that is attached to the polyether ring by an arm of variable length. The synthesis of crown ether compounds which contain other ionizable groups has also been briefly explored. Solvent extraction of lithium, sodium, potassium, rubidium, and cesium from water into chloroform by sym-dibenzo-16-crown-5-oxyacetic acid, 4, has also been investigated. Effects of pH and concentration upon the selectivity and efficiency of extraction have been determined.

• Research Organization: Texas Tech Univ., Lubbock (USA). Dept. of Chemistry
• DOE Contract Number: AS05-80ER10604
• OSTI ID: 6590653
• Report Number(s): DOE/ER/10604-1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALCOHOLS
ALKALI METALS
CARBOXYLIC ACIDS
CESIUM
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
ELEMENTS
EXTRACTION
GLYCOLS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROXY COMPOUNDS
LITHIUM
METALS
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SOLVENTS
PH VALUE
POLYETHYLENE GLYCOLS
POLYMERS
POTASSIUM
RESEARCH PROGRAMS
RUBIDIUM
SEPARATION PROCESSES
SODIUM
SOLVENT EXTRACTION
SOLVENTS
SYNTHESIS