Title of article
Allosteric anion recognition by metal complexation of tris(bipyridine–imidazolium) ligand
Author/Authors
Sato، نويسنده , , Kiyoshi and Sadamitsu، نويسنده , , Yuichi and Arai، نويسنده , , Sadao and Yamagishi، نويسنده , , Takamichi، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2007
Pages
4
From page
1493
To page
1496
Abstract
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.
Keywords
allosteric effect , Imidazolium , Pseudocryptand , Anion recognition
Journal title
Tetrahedron Letters
Serial Year
2007
Journal title
Tetrahedron Letters
Record number
1854311
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