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Regio- and diastereo-selective formation of dicopper(I) and disilver(I) double helicates with chiral 6-substituted 2,2 `: 6 `,2 ``-terpyridines

Baum, Gerhard and Constable, Edwin Charles and Fenske, Dieter and Housecroft, Catherine E. and Kulke, Torsten and Neuburger, Markus and Zehnder, Margareta. (2000) Regio- and diastereo-selective formation of dicopper(I) and disilver(I) double helicates with chiral 6-substituted 2,2 `: 6 `,2 ``-terpyridines. Dalton Transactions (6). pp. 945-959.

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Official URL: http://edoc.unibas.ch/39216/

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Abstract

Two enantiomeric pairs of chiral terpy ligands (I and II; III and IV) bearing enantiopure bornyloxy substituents at the 6-position were prepared in high yield, stereoretentive reactions from (1R)-endo- or (1S)-endo- borneol; compounds I, II and III were structurally characterised. Dinuclear double helicates were formed upon reaction with copper(I) salts, but solvent-dependent and reversible formation of mononuclear or dinuclear double-helical complexes was observed with silver(I) salts. The double helicates are formed with good to excellent diastereoselectivity for helical chirality. With these 6-substituted ligands, double helicates can exist as head-to-head (HH) or head-to-tail (HT) isomers; in solution, the HT isomers are favored, although solid state interactions can overcome this preference.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Constable, Edwin Charles
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:1477-9226
e-ISSN:1477-9234
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:12 Apr 2017 09:20
Deposited On:26 Apr 2016 14:25

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