Two Uranyl Complexes with Pyromellitic Acid. A Heterometallic Complex with U=O–CuII Interaction |
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| Authors: | Lingling Liang Yige Cai Xiang Li Ronglan Zhang Jianshe Zhao Chiyang Liu Ng Seik Weng |
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| Institution: | 1. College of Chemistry and Materials, Shaanxi Key Laboratory of Physico‐Inorganic Chemistry, Northwest University, Xi'an 710069, P. R. China;2. Department of Geology, Northwest University, Xi'an 710069, P. R. China;3. Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia |
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| Abstract: | Two uranyl complexes based on pyromellitic acid were hydrothermally synthesized, and their X‐ray single‐crystal diffraction structures were determined. Complex UO2(Hbtec)]–(Himd)+ · H2O ( 1 ) (H4btec = pyromellitic acid, imd = imidazole), is an ionic complex, which shows a typical (4, 4) topological structure in the space. A heterometallic complex, UO2Cu(btec)(phen) ( 2 ) (phen = 1,10‐phenanthroline) results from the reaction of uranyl nitrate and copper(II) bromide with pyromellitic acid. The structure of complex 2 revealed that the chains of UO7 and CuO3N2 units were connected to each other through the carboxyl groups and U=O–Cu interactions to create a two‐dimensional framework. |
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| Keywords: | Hydrothermal synthesis Uranium Uranyl‐copper(II) complex Pyromellitic acid Crystal structure |
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