《The Influence of Different Spacer Lengths on the Selectivity of Self-Assembly Processes of Bis(bipyridine)-BINOL Helicates》 was written by Bunzen, Jens; Hapke, Marko; Luetzen, Arne. SDS of cas: 189518-78-3 And the article was included in European Journal of Organic Chemistry on August 31 ,2009. The article conveys some information:
The synthesis and self-assembly behavior of enantiomerically pure bis(chelating) ligands is reported. The ligands differ in the spacer unit between a BINOL core and two bipyridyl groups as the chelating entities and undergo completely diastereoselective self-assembly to dinuclear double-stranded helicates with silver(I) salts, as demonstrated by NMR and CD spectroscopy and ESI mass spectrometry. Upon coordination to iron(II) or zinc(II) ions, however, a dramatic loss in the diastereoselectivity of the self-assembly of dinuclear triple-stranded helicates was observed as a result of increasing spacer length. In the case of zinc(II), the self-assembly processes were even found to be nonselective with regard to the composition of the helicates.(© Wiley-VCH Verlag GmbH and Co. KGaA, 69451 Weinheim, Germany, 2009).(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3SDS of cas: 189518-78-3) was used in this study.
(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) belongs to organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. SDS of cas: 189518-78-3 Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com