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Details van artikel 52 van 73 gevonden artikelen
| Titel: |
STEREOSELECTIVITY ON ELECTRON TRANSFER REACTIONS(I); REACTION OF THE Λ-[Co(EDDS)]- AND RAC-[Co(DIAMINE)3]2 COMPLEXES (DIAMINE = EN, CHXN) |
| Auteur: |
Kim, Dong-Yeub Jung, Maeng-Jun Oh, Chang-Eon Doh, Myung-Ki Lee, Dong-Jin |
| Verschenen in: |
Journal of coordination chemistry |
| Paginering: | Jaargang 37 (1996) nr. 1-4 pagina's 217-225 |
| Jaar: |
1996-02-01 |
| Inhoud: |
The absolute configuration of an optically active Λ-[Co(EDDS)]- (EDDS = ethylene-diaminedisuccinate) complex was determined as Λ by the regional rule and spectroscopic data. The stereoselective ionic association between Λ-[Co(EDDS)]- and rac-[Co(en)3]3+ occurs preferentially between Λ-[Co(EDDS)]- and δ-[Co(en)3]3+. The stereoselective electron transfer reaction between Λ-[Co(EDDS)]- and rac-[Co(en)3]2+ has been investigated in aqueous solution, DMF and DMSO. Their enantiomeric excesses (e.e.) observed are 14%, 26% and 40% of δ-[Co(en)3]3+, respectively. The electron transfer reaction between Λ-[Co(EDDS)]- and conformationally restricted [Co(chxn)3]2+ has been examined in aqueous and DMSO solution. In aqueous solution, there are four isomers in the product which were determined as lel3, lel2ob, lelob2, and ob3 of δ-[Co(chxn)3]3+ with optical purities of 22%, 25%, 11% and 10% e.e. respectively. In DMSO, the reaction produces lel3-δ-and lel2ob-δ-[Co(chxn)3]3+ with optical purities of 100% and 75% e.e. respectively. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 52 van 73 gevonden artikelen
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