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Schopnost nativních cyklodextrinů chirálně dělit klastrové anionty boru
Horáková, Hana ; Grüner, Bohumír ; Vespalec, Radim
Alfa-cyclodextrin is optimal for chiral separations of single-cage boron cluster anions only. Beta-cyclodextrin is optimal for chiral splitting of sandwich cobalt complexes, however, it may be used for the chiral splitting of single-cage boron cluster anions, too. Gama -cyclodextrin is not proper for chiral separations of boron cluster anions
Podmínky pro vysokou citlivost detekce a separační účinnost při separacích klastrových aniontů boru
Horáková, Hana ; Grüner, Bohumír ; Vespalec, Radim
The knowledge of UV-VIS spectra of investigated compounds is neccessary for the optimisation of detection sensitivity. The symmetry and narrow width of migrating zones require substantially improved dissolving power of the sample solvent and background electrolyte. Sodium borate buffer of pH 9.5 is more proper for separations of boron cluster anions in uncouted capillaries then sodium phosphate buffer of pH of 7. Decrease of mobilities of boron cluster anions with time has been found in chiral separations with .beta-CD if acetonitrile was present in background electrolyte

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