Chromogenic lariat ethers for selective alkali metal cation recognition.
Twelve new proton-ionizable, picrylamino-type chromogenic lariat ethers derived from dibenzo-14-crown-4, dibenzo-16-crown-5 and dibenzo-19-crown-6 demonstrate good selectivity and remarkable color response upon extraction of alkali metal cations from basic aqueous solutions into chloroform.
Talanova
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Department of Chemistry and Biochemistry, Texas Tech University, Lubbock 79409-1061, USA.
Hwang
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HS
Talanov
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VS
Bartsch
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RA