Paper
Temperature dependence of the optical resolution and solubility isotherm of bis(ethylenediamine)oxalatocobalt(III) (1R,3S,4S,7R)-3-bromocamphor-9-sulfonate.
Published May 1, 1979 · A. Fuyuhiro, K. Yamanari, Y. Shimura
Bulletin of the Chemical Society of Japan
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Abstract
The determination of solubility isotherm of a ternary system, Λ-[Co(ox)(en)2](d-C10H14OBrSO3)–Δ-[Co(ox)(en)2](d-C10H14OBrSO3)–H2O, between 5 and 25 °C, revealed that the resolving agent (1R,3S,4S,7R)-3-bromocamphor-9-sulfonate ion is applicable to the optical resolution of the [Co(ox)(en)2]+ ion below 19 °C from the viewpoint of solubility in water, in spite of the formation of a pseudo racemic compound, Λ-[Co(ox)(en)2]·Δ-[Co(ox)(en)2] (d-C10H14OBrSO3)2·2H2O.
The resolving agent (1R,3S,4S,7R)-3-bromocamphor-9-sulfonate ion is applicable for optical resolution of the [Co(ox)(en)2]+ ion below 19°C, despite the formation of a pseudo
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