A new 3D Co(II)-organic framework with acylamide-containing tetracarboxylate ligand: Solvothermal synthesis, crystal structure, gas adsorption and magnetic property

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• 作者：Qingfu Zhang ; ^{zhangqingfu@lcu.edu.cn" class="auth_mail} ; Haina Zhang ; Aijing Geng ; Suna Wang ; Chong Zhang
• 关键词：Cobalt(II)&ndash ; organic framework ; Acylamide ; Tetracarboxylate ligand ; Gas adsorption ; Magnetic property
• 刊名：Journal of Solid State Chemistry
• 出版年：April, 2014
• 年：2014
• 卷：212
• 期：Complete
• 页码：141-146
• 全文大小：1407 K

文摘

A new cobalt(II)-organic framework, [Co₂(L)(py)₂(DMSO)]_n鈥?.5nDMF鈥?nDMSO (1) [H₄L=5,5壮-((naphthalene-2,6-dicarbonyl)bis(azanediyl))diisophthalic acid, py=pyridine, DMSO=dimethyl sulfoxide, DMF=N,N-dimethylformamide], has been solvothermally synthesized and characterized by elemental analysis, IR, TGA, PXRD and single-crystal X-ray crystallography. The structural analysis reveals that complex 1 is a 3D framework built from nanosized acylamide-containing tetracarboxylate ligands (L^{4鈭?/sup>) and dinuclear [Co₂(CO₂)₄] secondary building units (SBUs), exhibiting a uninodal (4,4)-connected crb topology with the Schl盲fli symbol of (4鈥?5). The desolvated complex (1a) displays higher adsorption capability for CO₂ than N₂, which may be due to the relatively strong binding affinity between the CO₂ molecules and acylamide groups in the framework. The magnetic investigation shows that the dominant antiferromagnetic interaction is observed in complex 1.}