A 3D pillared-layer porous framework with rare magnetic corner-sharing ∆-chain and unprecedented pentadentate 5-(4-pyridyl)tetrazolate ligand

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• 作者：Zhong-Yi Liu ; Xiang-Jun Shi ; En-Cui Yang ; Xiao-Jun Zhao
• 关键词：Cobalt(II) ; Pyridyl tetrazolate ; Pillared-layer framework ; &#x2206 ; -Chain ; Spin frustration
• 刊名：Inorganic Chemistry Communications
• 出版年：2010
• 出版时间：November 2010
• 年：2010
• 卷：13
• 期：11
• 页码：1259-1262
• 全文大小：644 K

文摘

A 3D pillared-layer porous framework, {[Co₂(H₂O)(μ₃-OH)(ptz)(nip)]·2H₂O}_n (1) (ptz = 5-(4-pyridyl)tetrazolate, nip = 5-nitroisophthalate), was in situ hydrothermally synthesized and structurally and magnetically characterized. Interestingly, the layered substructure of 1 consists of scarcely observed corner-sharing Co₂(μ₃-OH) ∆-chain and unprecedented pentadentate ptz ligand. More importantly, due to the mixed triple syn,syn-carboxylate-μ₃-OH-μ₄-tetrazolyl bridges as well as the triangular Co^II arrangement, 1 behaves as a typical antiferromagnetically coupled paramagnet with a slight spin frustration, which exhibits a low-dimensional antiferromagnetic ordering below 10 K (Neel Temperature).