Two Uranyl Complexes with Pyromellitic Acid. A Heterometallic Complex with U=O-CuII Interaction

• Published in: Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 641; no. 10; pp. 1744 - 1748
• Main Authors: Liang, Lingling, Cai, Yige, Li, Xiang, Zhang, Ronglan, Zhao, Jianshe, Liu, Chiyang, Seik Weng, Ng
• Format: Journal Article
• Language: English; German
• Published: Weinheim WILEY-VCH Verlag 01.08.2015; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Subjects: Crystal structure; Hydrothermal synthesis; Pyromellitic acid; Uranium; Uranyl-copper(II) complex
• ISSN: 0044-2313; 1521-3749
• DOI: 10.1002/zaac.201500242

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.