Selective Separation of the Sulfate Anion by In Situ Crystallization of Cd
<sup>II</sup>
Coordination Compounds Derived from Bis(pyridyl) Ligands Equipped with a Urea/Amide Hydrogen‐Bonding Backbone
作者:Subhabrata Banerjee、N. N. Adarsh、Parthasarathi Dastidar
DOI:10.1002/ejic.201000359
日期:2010.8
indicates the selective separation of SO 4 2– , from an aqueous mixture of other competing anions, as revealed by FTIR spectroscopy, X-ray powder diffraction and elemental analysis. The X-ray structure of 2 indicates that both intermolecular hydrogen bonding and metal–ligand coordination of SO 4 2– , play an important role in the selective separation of SO 4 2– . A similar competitive crystallization also resulted
五种新型配位化合物,即[Cd(μ-L1)(μ-SO 4 )(H 2 O) 2 }·MeOH] ∞ (1), [Cd(μ-L2) 2 (SO 4 )(H 2 O)}·3.5H 2 O] ∞ (2), [Cd(μ-L3)(SO 4 )(H 2 O) 3 }·MeOH] ∞ (3), [Cd(L4) 4 ( H 2 O) 2 }·SO 4 ·8H 2 O] (4) 和 [Cd(μ-L5)(μ 3 -SO 4 )(H 2 O)}·2H 2 O] ∞ (5), [ L1 = N-(3-吡啶甲基)-N'-(3-吡啶基)脲,L2 = N-(4-吡啶甲基)-N'-(3-吡啶基)脲,L3 = N,N'-di-3 -pyridylurea, L4 = N,N'-di-4-pyridylurea and L5 = N,N'-di-3-pyridylnicotinamide] 已合成并通过单晶 X 射线衍射表征。结果表明,位置异构体