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Sulfate Binding with a Tripodal Tris(4‐pyridylurea) Receptor
Author(s) -
Zhang Rui,
Zhang Yanlei,
Wang Jiamin,
Ji Liguo,
Huang Xiaojuan,
Wu Biao
Publication year - 2013
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201300342
Subject(s) - chemistry , tris , tripodal ligand , ligand (biochemistry) , hydrogen bond , amine gas treating , ion , hydrate , urea , sulfate , coordination sphere , crystallography , inorganic chemistry , crystal structure , stereochemistry , molecule , receptor , organic chemistry , biochemistry
The tris(2‐aminoethyl)amine (tren)‐based tris(4‐pyridylurea) receptor L has been synthesized and its anion binding properties were studied. The ligand forms a 2:1 (host/guest) complex with MgSO 4 , [SO 4 2− ⊂ L 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(H 2 O) 6 ] 2+ and interact with the [SO 4 ⊂ L 2 ] capsules in the outer coordination sphere to form a three dimensional extended structure. The anion binding behavior of ligand L in solution was studied.