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Self assembled rotaxane and pseudo-rotaxanes based on beta-cyclodextrin inclusion compounds with trans-1,4-bis[(4-pyridyl)ethenyl]benzene-pentacyanoferrate(II) complexes

Toma, Sergio H. ; Toma, Henrique E.

Journal of the Brazilian Chemical Society, 2007-04, Vol.18 (2), p.279-283 [Periódico revisado por pares]

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Título:
Self assembled rotaxane and pseudo-rotaxanes based on beta-cyclodextrin inclusion compounds with trans-1,4-bis[(4-pyridyl)ethenyl]benzene-pentacyanoferrate(II) complexes
Autor: Toma, Sergio H. ; Toma, Henrique E.
Assuntos: CHEMISTRY, MULTIDISCIPLINARY
É parte de: Journal of the Brazilian Chemical Society, 2007-04, Vol.18 (2), p.279-283
Descrição: Inclusion compounds of trans-1,4-bis[(4-pyridyl)ethenyl]benzene (BPEB) and their corresponding pentacyanoferrate(II) complexes with beta-cyclodextrin have been studied in aqueous solution by ¹H NMR and UV-Visible spectroscopy. All the inclusion compounds exhibit 1:1 stoichiometry is aqueous solution. In the presence of beta-cyclodextrin, the binuclear {[Fe(CN)5]2(BPEB)]6- complex is gradually converted into rotaxane species bearing [Fe(CN)5]3-end groups, by a self assembly inclusion mechanism, as confirmed by ¹H NMR spectroscopy.
Editor: Sociedade Brasileira de Química
Idioma: Inglês;Português

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