Sulfate Binding with a Tripodal Tris(4‐pyridylurea) Receptor. Issue 5 (21st May 2013)

• Record Type: Journal Article
• Authors: Zhang, Rui; Zhang, Yanlei; Wang, Jiamin; Ji, Liguo; Huang, Xiaojuan; Wu, Biao
• Is Part Of: Chinese journal of chemistry. Volume 31:Issue 5(2013:May)
• Page Start: 679
• Page End: 683
• Publication Date: 2013-05-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201300342
• Languages: English
• ISSNs: 1001-604X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The tris(2‐aminoethyl)amine (tren)‐based tris(4‐pyridylurea) receptor <bold>L</bold> has been synthesized and its anion binding properties were studied. The ligand forms a 2:1 (host/guest) complex with MgSO₄, [SO₄²⁻⊂<bold>L</bold>₂], in which a sulfate ion is encapsulated by six urea groups from the two ligands through multiple hydrogen bonds. The metal ions do not coordinate to the pyridyl groups but exist as the hydrate [Mg(H₂O)₆]²⁺ and interact with the [SO₄⊂<bold>L</bold>₂] capsules in the outer coordination sphere to form a three dimensional extended structure. The anion binding behavior of ligand <bold>L</bold> in solution was studied.</p> </abstract>