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- Molecular_Borromean_rings abstract "Molecular Borromean rings are an example of a mechanically-interlocked molecular architecture in which three macrocycles are interlocked in such a way that breaking any macrocycle allows the others to disassociate. They are the smallest examples of Borromean rings. The synthesis of molecular Borromean rings was reported in 2004 by the group of J. Fraser Stoddart. The so-called Borromeate is made up of three interpenetrated macrocycles formed from the reaction between 2,6-diformylpyridine and diamine compounds, complexed with zinc.This compound was synthesized from two building blocks: 2,6-diformylpyridine (a pyridine with two aldehyde groups) and a diamine containing a 2,2'-bipyridine group. Zinc acetate is added as the template for the reaction, resulting in one zinc atom in each of a total of 6 pentacoordinate complexation sites. Trifluoroacetic acid (TFA) is added to catalyse the imine bond-forming reactions. The preparation of the tri-ring Borromeate involves a total of 18 precursor molecules and is only possible because the building blocks self-assemble through 12 aromatic pi-pi interactions and 30 zinc to nitrogen dative bonds. Because of these interactions, the Borromeate is thermodynamically the most stable reaction product out of potentially many others. As a consequence of all the reactions taking place being equilibria, the Borromeate is the predominant reaction product. Reduction with sodium borohydride in ethanol affords the neutral Borromeand. True to a Borromean system, cleavage of just one imine bond (to an amine and an acetal) in this structure breaks the mechanical bond between the three constituent macrocycles, releasing the other two individual rings.Organic synthesis of this seemingly complex compound is in reality fairly simple; the reason why the Stoddart group has suggested it for a classroom experiment on a gram scale.".
- Molecular_Borromean_rings thumbnail Molecular_Borromean_Ring.png?width=300.
- Molecular_Borromean_rings wikiPageExternalLink 8222notw1.html.
- Molecular_Borromean_rings wikiPageExternalLink chemistry.html.
- Molecular_Borromean_rings wikiPageID "2401526".
- Molecular_Borromean_rings wikiPageLength "4485".
- Molecular_Borromean_rings wikiPageOutDegree "35".
- Molecular_Borromean_rings wikiPageRevisionID "651628533".
- Molecular_Borromean_rings wikiPageWikiLink 2,2-Bipyridine.
- Molecular_Borromean_rings wikiPageWikiLink Acetal.
- Molecular_Borromean_rings wikiPageWikiLink Aldehyde.
- Molecular_Borromean_rings wikiPageWikiLink Amine.
- Molecular_Borromean_rings wikiPageWikiLink Borromean_rings.
- Molecular_Borromean_rings wikiPageWikiLink Catalysis.
- Molecular_Borromean_rings wikiPageWikiLink Category:Molecular_topology.
- Molecular_Borromean_rings wikiPageWikiLink Category:Supramolecular_chemistry.
- Molecular_Borromean_rings wikiPageWikiLink Chemical_&_Engineering_News.
- Molecular_Borromean_rings wikiPageWikiLink Chemical_equilibrium.
- Molecular_Borromean_rings wikiPageWikiLink Coordination_complex.
- Molecular_Borromean_rings wikiPageWikiLink Diamine.
- Molecular_Borromean_rings wikiPageWikiLink Dipolar_bond.
- Molecular_Borromean_rings wikiPageWikiLink Dynamic_covalent_chemistry.
- Molecular_Borromean_rings wikiPageWikiLink Ethanol.
- Molecular_Borromean_rings wikiPageWikiLink Fraser_Stoddart.
- Molecular_Borromean_rings wikiPageWikiLink Imine.
- Molecular_Borromean_rings wikiPageWikiLink Macrocycle.
- Molecular_Borromean_rings wikiPageWikiLink Mechanical_bond.
- Molecular_Borromean_rings wikiPageWikiLink Mechanically_interlocked_molecular_architectures.
- Molecular_Borromean_rings wikiPageWikiLink Molecular_self-assembly.
- Molecular_Borromean_rings wikiPageWikiLink Organic_redox_reaction.
- Molecular_Borromean_rings wikiPageWikiLink Organic_synthesis.
- Molecular_Borromean_rings wikiPageWikiLink Pyridine.
- Molecular_Borromean_rings wikiPageWikiLink Sodium_borohydride.
- Molecular_Borromean_rings wikiPageWikiLink Stacking_(chemistry).
- Molecular_Borromean_rings wikiPageWikiLink Trifluoroacetic_acid.
- Molecular_Borromean_rings wikiPageWikiLink Zinc.
- Molecular_Borromean_rings wikiPageWikiLink Zinc_acetate.
- Molecular_Borromean_rings wikiPageWikiLink File:Borromean_synthesis.png.
- Molecular_Borromean_rings wikiPageWikiLink File:Borromeand.png.
- Molecular_Borromean_rings wikiPageWikiLink File:Molecular_Borromean_Ring.png.
- Molecular_Borromean_rings wikiPageWikiLink File:Molecular_Borromean_Rings_Atwood_Stoddart_commons.jpg.
- Molecular_Borromean_rings wikiPageWikiLinkText "Molecular Borromean rings".
- Molecular_Borromean_rings wikiPageWikiLinkText "molecular Borromean rings".
- Molecular_Borromean_rings wikiPageWikiLinkText "molecular analog of Borromean rings".
- Molecular_Borromean_rings wikiPageUsesTemplate Template:Reflist.
- Molecular_Borromean_rings subject Category:Molecular_topology.
- Molecular_Borromean_rings subject Category:Supramolecular_chemistry.
- Molecular_Borromean_rings hypernym Example.
- Molecular_Borromean_rings type Building.
- Molecular_Borromean_rings comment "Molecular Borromean rings are an example of a mechanically-interlocked molecular architecture in which three macrocycles are interlocked in such a way that breaking any macrocycle allows the others to disassociate. They are the smallest examples of Borromean rings. The synthesis of molecular Borromean rings was reported in 2004 by the group of J. Fraser Stoddart.".
- Molecular_Borromean_rings label "Molecular Borromean rings".
- Molecular_Borromean_rings sameAs Q3616599.
- Molecular_Borromean_rings sameAs Anillos_moleculares_de_Borromeo.
- Molecular_Borromean_rings sameAs Anelli_di_Borromeo_molecolari.
- Molecular_Borromean_rings sameAs m.079jz_.
- Molecular_Borromean_rings sameAs Q3616599.
- Molecular_Borromean_rings wasDerivedFrom Molecular_Borromean_rings?oldid=651628533.
- Molecular_Borromean_rings depiction Molecular_Borromean_Ring.png.
- Molecular_Borromean_rings isPrimaryTopicOf Molecular_Borromean_rings.