Surfactant Media To Grow New Crystalline Cobalt 1,3,5-Benzenetricarboxylate Metal鈥揙rganic Frameworks

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• 作者：Hai-Sheng Lu ; Linlu Bai ; Wei-Wei Xiong ; Peizhou Li ; Junfeng Ding ; Guodong Zhang ; Tom Wu ; Yanli Zhao ; Jong-Min Lee ; Yanhui Yang ; Baoyou Geng ; Qichun Zhang
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：August 18, 2014
• 年：2014
• 卷：53
• 期：16
• 页码：8529-8537
• 全文大小：537K
• ISSN：1520-510X

文摘

In this report, three new metal鈥搊rganic frameworks (MOFs), [Co₃(渭₃-OH)(HBTC)(BTC)₂Co(HBTC)]路(HTEA)₃路H₂O (NTU-Z30), [Co(BTC)]路HTEA路H₂O (NTU-Z31), [Co₃(BTC)₄]路(HTEA)₄ (NTU-Z32), where H₃BTC = 1,3,5-benzenetricarboxylic acid, TEA = triethylamine, and NTU = Nanyang Technological University, have been successfully synthesized under surfactant media and have been carefully characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis, and IR spectromtry. NTU-Z30 has an unusual trimeric [Co₃(渭₃-OH)(COO)₇] secondary building unit (SBU), which is different from the well-known trimeric [Co₃O(COO)₆] SBU. The topology studies indicate that NTU-Z30 and NTU-Z32 possess two new topologies, 3,3,6,7-c net and 2,8-c net, respectively, while NTU-Z31 has a known topology rtl type (3,6-c net). Magnetic analyses show that all three materials have weak antiferromagnetic behavior. Furthermore, NTU-Z30 has been selected as the heterogeneous catalyst for the aerobic epoxidation of alkene, and our results show that this material exhibits excellent catalytic activity as well as good stability. Our success in growing new crystalline cobalt 1,3,5-benzenetricarboxylate MOFs under surfactant media could pave a new road to preparing new diverse crystalline inorganic materials through a surfactant-thermal method.