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Treatment of the racemic isomer (ΔΔ/ΛΛ)of the cationic CoIII3 trinuclear complex that includes 2-aminoethanethiolate (aet), (ΔΔ/Λ&#923-[Co3(aet)6]3+, with the ΔLLLΔLLL isomer of the anionic AgI3MIII2 pentanuclear complex that includes L-cysteinate (L-cys), ΔLLLΔLLL-[Ag3M2(L-cys)6]3- (M = Co, Rh), in water produced a 1:1 complex saltof [Co3(aet)6][Ag3M2(L-cys)6] in which only the ΔΔ isomer of [Co3(aet)6]3+ was incorporated. A similar treatment with the analogous AuI3MIII2 complex, ΔLLLΔLLL -[Au3M2(L-cys)6]3-,also produced the 1:1 complex salt, but it incorporated both the (ΔΔ and ΛΛ isomers of [Co3(aet)6]3+. [ABSTRACT FROM AUTHOR]

An abstract of the article "A Remarkable Enantioselectivity of Diastereomers of an L-Cysteinato CoIII3 Complex-anion toward a Racemic 2-Aminoethanethiolato CoIII2AgI3 Complex-cation," by Hou Qun Yuan, Asako Igashira-Kamiyama and Takumi Konno is presented.

An abstract of the article "Aggregation of L-Cysteinato Tricobaltate(III) Anion by Lanthanide(III) Cations into Dimensional Structures That are Controlled by Diastereoisomerism and Ionic Size," by Hou Qun Yuan, Asako Igashira-Kamiyama, and Takumi Konno is presented.

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-. [ABSTRACT FROM AUTHOR]