• Title/Summary/Keyword: Stereoselective Ligand Exchange Reaction

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Stereoselective Ligand Exchange Reaction of trans-dichlorocobalt(III) complex contained SS-epm and racemi propane-1,2-diamine (SS-epm이 배위된 trans-dichlorocobalt(III) 착물과 라세미 propane-1,2-diamine과의 입체선택적 리간드 치환반응)

  • Kim, Dong-Yeub
    • Journal of the Korean Society of Industry Convergence
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    • v.3 no.1
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    • pp.77-82
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    • 2000

  • The stereoselective ligand exchange reaction of trans-$[Co(SS-epm)Cl_2]^+$ and racemic propane-1,2-diamine (rac-pn) produces the complex that is identified as $[CO(N)_6]^{3+}$ type of $[Co(SS-epm)(pn)]^{3+}$ by absorption spectrum. It is conceivable that the reaction mechanism involves substitution and isomerization. The calculated and experimentally determined ratios of the complexed enantiomeric substrates at equilibrium were as follows: $[Co(SS-epm)(pn)]^{3+}$,calcd 32 % / 68 %, exptl 19 % / 81 % R-pn / S-pn. It has been shown that the employment of molecular mechanics calculations as a predictive tool may lead to the design of chiral complexes that may be applied to the separation of racemic mixtures of simple bidentate ligands.

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