Correlation of Mesh Size of Metal鈥揅arboxylate Layer with Degree of Interpenetration in Pillared-Layer Frameworks

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• 作者：Cheng-Hua Lee ; Jing-Yun Wu ; Gene-Hsiang Lee ; Shie-Ming Peng ; Jyh-Chiang Jiang ; Kuang-Lieh Lu
• 刊名：Crystal Growth & Design
• 出版年：2014
• 出版时间：November 5, 2014
• 年：2014
• 卷：14
• 期：11
• 页码：5608-5616
• 全文大小：525K
• ISSN：1528-7505

文摘

Two porous cobal鈥搊rganic frameworks showing threefold interpenetration of pillared-layer structures, constructed from two-dimensional (2D) neutral metal鈥揷arboxylate layers and neutral bis-pyridyl-bis-amide pillars, were hydro(solvo)thermally synthesized and structurally characterized by single-crystal X-ray diffraction. Compound {[Co₂(thdc)₂(bpda)₂(DMF)]路2DMF}_n (1, thdc = 2,5-thiophenedicarboxylate; bpda = N,N鈥?bis(4-pyridinyl)-1,4-benzenedicarboxamide) adopts a uninodal 6-connected three-dimensional (3D) framework with a {4¹²路6³}-pcu topology in which 2D rhomboid-like 4⁴-sql Co鈥搕hdc layers are pillared by bpda ligands. While compound {[Co₃(btc)₂(bpda)₃]路2DMF路9H₂O}_n (2, btc = 1,3,5-benzenetricarboxylate) is composed of a binodal (3,4)-connected 3D framework with a (6³)₂(6⁴路8路10)₃ topology that can be described in terms of two building subunits鈥攁 2D porous honeycomb-like 6³-hcb Co鈥揵tc layer and a bpda pillar. An in-depth analysis showed that the mesh size of the metal鈥揷arboxylate layer, in addition to the pillar length, is highly correlated with the degree of interpenetration in the pillared-layer framework. The structural characteristics of frameworks 1 and 2 fully support this relationship.