Hydrothermal synthesis, crystal structure, and characterization of a new pseudo-two-dimensional uranyl oxyfluoride, [N(C2H5)4]2[(UO2)4(OH2)3F10] |
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| Authors: | Kang Min Ok |
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| Institution: | Chemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK |
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| Abstract: | A new uranyl oxyfluoride, N(C2H5)4]2(UO2)4(OH2)3F10] has been synthesized by a hydrothermal reaction technique using (C2H5)4NBr, UO2(OCOCH3)2·2H2O, and HF as reagents. The structure of N(C2H5)4]2(UO2)4(OH2)3F10] has been determined by a single-crystal X-ray diffraction technique. N(C2H5)4]2(UO2)4(OH2)3F10] crystallizes in the monoclinic space group P21/n (No. 14), with  ,  ,  , β=98.88(3)°,  , and Z=4. N(C2H5)4]2(UO2)4(OH2)3F10] reveals a novel pseudo-two-dimensional crystal structure that is composed of UO2F5, UO3F4, and UO4F3 pentagonal bipyramids. Each uranyl pentagonal bipyramid shares edges and corners through F atoms to form a six-membered ring. The rings are further interconnected to generate infinite strips running along the b-axis. N(C2H5)4]2(UO2)4(OH2)3F10] has been further characterized by elemental analysis, bond valence calculations, Infrared and Raman spectroscopy, and thermogravimetric analysis. |
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| Keywords: | Synthesis Uranyl oxyfluoride Pseudo-two-dimensional structure |
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