Premium
Hydrothermal synthesis, crystal structure and properties of a two‐dimensional uranyl coordination polymer based on a flexible zwitterionic ligand
Author(s) -
Cui Wen,
Wang Ruyu,
Shu Xi,
Fan Yu,
Liu Yang,
Jin Yongdong,
Xia Chuanqin,
Huang Chao
Publication year - 2018
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229618002279
Subject(s) - uranyl , thermogravimetric analysis , methylene , carboxylate , chemistry , coordination polymer , powder diffraction , ligand (biochemistry) , crystallography , hydrothermal synthesis , hydrothermal circulation , polymer , crystal structure , infrared spectroscopy , thermal stability , coordination complex , inorganic chemistry , stereochemistry , chemical engineering , organic chemistry , metal , ion , biochemistry , receptor , engineering
The interaction between the uranyl cation, (UO 2 ) 2+ , and organic species is of interest due to the potential applications of the resulting compounds with regard to nuclear waste disposal and nuclear fuel reprocessing. The hydrothermal reaction of various uranyl compounds with flexible zwitterionic 1,1′‐[1,4‐phenylenebis(methylene)]bis(pyridin‐1‐ium‐4‐carboxylate) dihydrochloride (Bpmb·2HCl) in deionized water containing drops of H 2 SO 4 resulted in the formation of a novel two‐dimensional uranyl coordination polymer, namely poly[tetraoxido{μ 2 ‐1,1′‐[1,4‐phenylenebis(methylene)]bis(pyridin‐1‐ium‐4‐carboxylate)}di‐μ 3 ‐sulfato‐diuranium(VI)], [(UO 2 ) 2 (SO 4 ) 2 (C 20 H 16 N 2 O 4 )] n , (1). Single‐crystal X‐ray diffraction reveals that this coordination polymer exhibits a layered arrangement and the (UO 2 ) 2+ centre is coordinated by five equatorial O atoms. The structure was further characterized by FT–IR spectroscopy, powder X‐ray diffraction (PXRD) and thermogravimetric analysis (TGA). The polymer shows high thermal stability up to 696 K. Furthermore, the photoluminescence properties of (1) has also been studied, showing it to exhibit a typical uranyl fluorescence.