Mutual Chiral Discrimination between Tricationic and Trianionic Sulfur-bridged Tricobalt(III) Complexes

Treatment of the racemic (Δ)2⁄(Λ)2 isomer of the tricationic complex, [Co3(aet)6]3+ ([1]3+), with the optically active (ΛLLL)2 isomer of the trianionic complex, [Co3(L-cys-N,S)6]3− ([2]3−), afforded only the (Δ)2(ΛLLL)2 isomer of the complex salt, [Co3(aet)6][Co3(L-cys-N,S)6] (3), the structure of w...

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Bibliographic Details
Published in:Chemistry letters 2009-07, Vol.38 (7), p.704-705
Main Authors: Yuan, Hou Qun, Igashira-Kamiyama, Asako, Tsuge, Kiyoshi, Konno, Takumi
Format: Article
Language:English
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Summary:Treatment of the racemic (Δ)2⁄(Λ)2 isomer of the tricationic complex, [Co3(aet)6]3+ ([1]3+), with the optically active (ΛLLL)2 isomer of the trianionic complex, [Co3(L-cys-N,S)6]3− ([2]3−), afforded only the (Δ)2(ΛLLL)2 isomer of the complex salt, [Co3(aet)6][Co3(L-cys-N,S)6] (3), the structure of which was determined by X-ray crystallography. The selective formation of this isomer was also observed when the racemic isomer of [1]3+ was treated with a 1:1 mixture of the (ΔLLL)2 and (ΛLLL)2 isomers of [2]3−.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2009.704