Allosteric anion recognition by metal complexation of tris(bipyridine–imidazolium) ligand

Autor:	Sadao Arai, Yuichi Sadamitsu, Kiyoshi Sato, Takamichi Yamagishi
Rok vydání:	2007
Předmět:	Tris Molecular model Ligand Stereochemistry Organic Chemistry Allosteric regulation Biochemistry Ion Metal chemistry.chemical_compound Crystallography Bipyridine chemistry visual_art Drug Discovery visual_art.visual_art_medium Selectivity
Zdroj:	Tetrahedron Letters. 48:1493-1496
ISSN:	0040-4039
DOI:	10.1016/j.tetlet.2006.12.118
Popis:	A new tripodal imidazolium ligand 2 comprising three 2,2′-bipyridine–imidazolium subunits connected through a mesityl spacer has been synthesized and 1:1 complexes of 2 with Fe(II) and Ru(II) ions have been prepared. 1H NMR spectroscopy including NOE analysis and molecular modeling study established that the complexes exist as a pseudocryptand type twisted structure in solution. The Fe(II) and Ru(II) complexes show strong 1:1 binding of Cl−, Br−, and I− anions in MeCN-d3 with a large enhancement of the guest selectivity (Cl− > Br− > I−) upon metal complexation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7f5876924d8ee723bf3a170b6cb15c99 https://doi.org/10.1016/j.tetlet.2006.12.118 Zobrazit plný text záznamu Full Text from ScienceDirect