SELECTIVE EXTRACTION OF ALKALI METAL CATIONS BY A PHOTORESPONSIVE BIS(CROWN ETHER)
نویسندگان
چکیده
منابع مشابه
SELECTIVE TRANSPORT AND EXTRACTION OF ALKALI METAL CATIONS (Na & K ) THROUGH CHLOROFORM LIQUID MEMBRANE BY DIETHYLENE GLYCOL MONOBUTYL ETHER AND DIETHYLENE GLYCOL DIBUTYL ETHER
A liquid membrane containing diethylene glycol monobutyl ether (2) shows specificity for K ion in transport while diethylene glycol dibutyl ether (1) was selective for Na over K . As an extractant, ligand 2 exhibited pronounced extraction selectivity for K over Na in comparison with ligand 1
متن کاملselective transport and extraction of alkali metal cations (na & k ) through chloroform liquid membrane by diethylene glycol monobutyl ether and diethylene glycol dibutyl ether
a liquid membrane containing diethylene glycol monobutyl ether (2) shows specificity for k ion in transport while diethylene glycol dibutyl ether (1) was selective for na over k . as an extractant, ligand 2 exhibited pronounced extraction selectivity for k over na in comparison with ligand 1
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K(+) is a competitive inhibitor of the uptake of the other alkali metal cations by yeast. Rb(+) is a competitive inhibitor of K(+) uptake, but Li(+), Na(+), and Cs(+) act like H(+). At relatively low concentrations they behave as apparent noncompetitive inhibitors of K(+) transport, but the inhibition is incomplete. At higher concentrations they inhibit the remaining K(+) transport competitivel...
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The DO1(18c6)fi (MwLi. Na. K and I 8c6=18-crown-6) complexes have been chosen as the model systems toinvestigate the nature of chemical bonds between alkali metal cations and large mffitidentaie orgmnic ligands.The B3LYP/6-3I+G(d,p) level of calculation has been used for obtaining equilibrium geernetnes and p(r)functions (electron density distributions). By the aid of fundamental physical theor...
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K+ is a competitive inhibitor of the uptake of the other alkali metal cations by yeast. Rb+ is a competitive inhibitor of K+ uptake, but Li+, Na+, and Cs+ act like H+. At relatively low concentrations they behave as apparent noncompetitive inhibitors of K+ transport, but the inhibition is incomplete. At higher concentrations they inhibit the remaining K+ transport competitively. Ca++ and Mg++ i...
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ژورنال
عنوان ژورنال: Chemistry Letters
سال: 1980
ISSN: 0366-7022,1348-0715
DOI: 10.1246/cl.1980.283