ISSN:
1432-1432
Keywords:
Induced resolution
;
Chiral influence
;
Sodium-ammonium tartrate
;
Origin of optical activity
;
Stereoselective crystallization
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Isothermal crystallization of D,L-sodium-ammonium tartrate with traces of different impurities admixed shows that the added chiral contaminations produce a preferential crystallization of the tartrate isomer of same handedness. The critical lowest concentration of effective seeding agents is 0.1-0.5 %. 1 % optically active excess material induces 1.0-3.6 % optical purity in the deposited crystals. An analysis of the relevant data reported so far gives similar figures in different crystallization systems. The relation of the results to the suggested lattice energy difference between enantiomers is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01751809
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