An anionic {[MnCo(ox)(3)](-)}(n) network with appropriate cavities for theenantioselective recognition and resolution of the hexacoordinated monocation [Ru(bpy)(2)(ppy)](+) (bpy = bipyridine, ppy = phenylpyridine)

Citation
M. Brissard et al., An anionic {[MnCo(ox)(3)](-)}(n) network with appropriate cavities for theenantioselective recognition and resolution of the hexacoordinated monocation [Ru(bpy)(2)(ppy)](+) (bpy = bipyridine, ppy = phenylpyridine), EUR J INORG, (7), 2001, pp. 1745-1751
Citations number
37
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
1434-1948 → ACNP
Issue
7
Year of publication
2001
Pages
1745 - 1751
Database
ISI
SICI code
1434-1948(200107):7<1745:AA{NWA>2.0.ZU;2-D
Abstract
Partial resolution of the rac-[Ru(bpy)(2)(ppy)](+) monocation into [Delta - Ru(bpy)(2)(ppy)]PF6 (1 Delta) (ee = 44%) and [Lambda -Ru(bpy)(2)(pPY)]PF6 ( I Lambda) (ee = 50%) enantiomers was achieved by an unprecedented resolving process which involves the diastereoselective preparation of optically act ive networks of the type ([Lambda -Ru(bpy)(2)(ppy)][Mn-Lambda -Co(ox)(3)])( n) (2 Lambda) and ([Delta -Ru(bpy)(2)(ppy)][Mn-Delta -Co(ox)(3)])(n) (2 Del ta). In these optically active inorganic polymers, the counter-monocation [ Ru(bpy)(2)(ppy)](+) of appropriate configuration occupies the cavities whil e the excess [Ru(bpy)(2)(ppy)](+), of opposite configuration, remains in so lution and is thus recovered. Anion metathesis of the optically active [Ru( bpy)(2)(ppy)]PFB (1 Delta) (ee = 44%) and (1 Lambda) (ee = 50%) with [1-cin chonidinium][Delta -trisphat] [trisphat = tris (tetrachlorobenzenediolato)- phosphate (V)] provides the related diastereomers [Delta -Ru(bpu)(2)(ppy)][ Delta -trisphat] (3 Delta) (de= 44%) and [Lambda -Ru(bpy)(2)(ppu) ][Delta - trisphat] (3 Lambda) (de = 50%) in 60% yield. Their diastereomeric excesses were assessed by H-1 NMR analysis. All products were fully characterized a nd the absolute configuration was determined by circular dichroism techniqu es in solution or in the solid state. Additionally the X-say structure of [ Ru(bpy)(2)(PPY)]PF6 (1) Was determined.