Entangled Uranyl Organic Frameworks with (10,3)-b Topology and Polythreading Network: Structure, Luminescence, and Computational Investigation

详细信息    查看全文

• 作者：Chao Liu ; Chao-Ying Gao ; Weiting Yang ; Fang-Yuan Chen ; Qing-Jiang Pan ; Jiyang Li ; Zhong-Ming Sun
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：June 6, 2016
• 年：2016
• 卷：55
• 期：11
• 页码：5540-5548
• 全文大小：648K
• 年卷期：0
• ISSN：1520-510X

文摘

Two 3D uranyl organic frameworks (UOFs) with entangled structures, (HPhen)₂[(UO₂)₂L₂]·4.5H₂O (1) and [(UO₂)₃(H₂O)₄L₂]·6H₂O (2), were synthesized using a rigid tripodal linker (4,4′,4″-(phenylsilanetriyl)tribenzoic acid, H₃L). Compound 1 represents a 2-fold interpenetrating UOF with the unique (10,3)-b topology. Compound 2 is composed of three interlocked sets of identical singlet networks and thus exhibits a rare 3D polythreading network with (3,4)-connected topology. These two compounds have been characterized by IR, UV–vis, and photoluminescent spectroscopy. A density functional theory (DFT) study on the model compounds of 1 and 2 shows good agreement of structural parameters and U═O stretching vibrational frequencies with experimental data. The experimentally measured absorption bands were well reproduced by the time-dependent DFT calculations.