Enantiopure Chiral Coordination Polymers Based on Polynuclear Paddlewheel Helices and Arsenyl Tartrate
VALENTÍN-PÉREZ, Ángela
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
VALENTÍN-PÉREZ, Ángela
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
CORTIJO, Miguel
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
< Reduce
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Language
en
Article de revue
This item was published in
Polymers. 2018, vol. 10, n° 3, p. 311
MDPI
English Abstract
Herein, we report the preparation of chiral, one-dimensional coordination polymers based on trinuclear paddlewheel helices [M3(dpa)4]2+ (M = Co(II) and Ni(II); dpa = the anion of 2,2′-dipyridylamine). Enantiomeric resolution ...Read more >
Herein, we report the preparation of chiral, one-dimensional coordination polymers based on trinuclear paddlewheel helices [M3(dpa)4]2+ (M = Co(II) and Ni(II); dpa = the anion of 2,2′-dipyridylamine). Enantiomeric resolution of a racemic mixture of [M3(dpa)4]2+ complexes was achieved by chiral recognition of the respective enantiomer by [Δ-As2(tartrate)2]2− or [Λ-As2(tartrate)2]2− in N,N-dimethylformamide (DMF), affording crystalline coordination polymers formed from [(Δ-Co3(dpa)4)(Λ-As2(tartrate)2)]·3DMF (Δ-1), [(Λ-Co3(dpa)4)(Δ-As2(tartrate)2)]·3DMF (Λ-1), [(Δ-Ni3(dpa)4)(Λ-As2(tartrate)2)]·(4 − n)DMF∙nEt2O (Δ-2) or [(Λ-Ni3(dpa)4)(Δ-As2(tartrate)2)]·(4 − n)DMF∙nEt2O (Λ-2) repeating units. UV-visible circular dichroism spectra of the complexes in DMF solutions demonstrate the efficient isolation of optically active species. The helicoidal [M3(dpa)4]2+ units that were obtained display high stability towards racemization as shown by the absence of an evolution of the dichroic signals after several days at room temperature and only a small decrease of the signal after 3 h at 80 °C.Read less <
English Keywords
Circular dichroism
X-ray crystallography
Extended metal atom chains
Enantiomeric resolution
Chiral coordination polymers
chiral coordination polymers
enantiomeric resolution
extended metal atom chains
circular dichroism
European Project
European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 706556 CHIMMM ( the ANR project CHIROTS ANR-11-JS07-013-01 (Patrick Rosa, PhD fellowship for Ahmad Naim).
ANR Project
Synthèse, caractérisation et mesures Optiques sur composés CHIRaux à Transition de Spin - ANR-11-JS07-0013
Origin
Hal imported