A New Family of Cadmium(II) Coordination Polymers from Coligands: Effect of the Coexistent Groups (R = H, −NO2, −OH) on Crystal Structures and Properties
A New Family of Cadmium(II) Coordination Polymers from Coligands: Effect of the Coexistent Groups (R = H, −NO2, −OH) on Crystal Structures and Properties
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DOI：
10.1021/cg050126d
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发表时间：
2005-06
影响因子：
3.8
通讯作者：
Xiaoju Li;R. Cao;Wenhua Bi;Yanqin Wang;Yuling Wang;Xing Li;Zhengang Guo
中科院分区：
文献类型：
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作者：
Xiaoju Li;R. Cao;Wenhua Bi;Yanqin Wang;Yuling Wang;Xing Li;Zhengang Guo
用溶剂热法或水热法制备了新型三维镉(II)配位聚合物[Cd(Bimb)0.5(Bdc)(H2O)]n(1)、[Cd(Bimb)0.5(O2N−bdc)(H2O)]n(2)和{[Cd(Bimb)0.5(Ho−bdc)]·(H2O)}n(3).H2bdc=间苯二甲酸，O2N−H2bdc=5-硝基间苯二甲酸，Ho−H2bdc=5-羟基间苯二甲酸]。化合物1和2都具有相似的超分子组装，从二维(2D)层通过氢键延伸出大通道；由于2中存在硝基，2D层由大小不同的8元环、16元环和40元环组成。化合物3是一个带有客水分子的多孔骨架，它来自一维(1D)镉−羧酸链，由Ho−BDC和BIMB伸展，分子内氢键进一步稳定结构。与H_2bdc相比，两者共存。
A new family of three-dimensional cadmium(II) coordination polymers, [Cd(bimb)0.5(bdc)(H2O)]n (1), [Cd(bimb)0.5(O2N−bdc)(H2O)]n (2), and {[Cd(bimb)0.5(HO−bdc)]·(H2O)}n (3), has been solvothermally or hydrothermally prepared by the assembly of bimb, CdII with H2bdc, and its two derivatives, O2N−H2bdc and HO−H2bdc, respectively, [bimb = 1,2-bis(imidazol-1‘-yl)butane, H2bdc = m-isophthalic acid, O2N−H2bdc = 5-nitroisophthalic acid, HO−H2bdc = 5-hydroxylisophthalic acid]. Both 1 and 2 have similar supramolecular assemblies with large channels from two-dimensional (2D) layers extended by hydrogen bonds; the 2D layers consist of arranged eight-membered, 16-membered, and 40-membered rings with different sizes owing to the presence of nitryl groups in 2. Compound 3 is a porous framework with guest water molecules, which arises from a one-dimensional (1D) cadmium−carboxylate chain stretched by HO−bdc and bimb, and the intramolecular hydrogen bonds further stabilize the structure. As compared to H2bdc, the coexiste...