Before its isotopic enrichment, uranium is chemically treated in order to produce uranium hexafluoride. Depending on the source, this uranium is susceptible to contain impurities that can lead to the formation of secondary mixed phases. Any addition of oxygen in the process will lead to the presence of diverse uranium oxyfluoride compounds. However, while uranium-bearing materials have been extensively studied because of their interesting coordination chemistry and diverse physical-chemical properties very few uranium fluorides and oxyfluorides have been crystallographically characterized and reported in the literature. Most were described after the Manhattan project by Zachariasen and few have been investigated since. Organically templated uranium oxyfluorides have been reported with a wide variety of structures. A large number of these oxyfluorides adopt either mono or bidimensional structures, while only a few exhibit a 3D framework. We will present our work on uranyl (oxi)fluorides at the ICCF and 2 uranyl oxyfluoride structures that will be the starting point for a brief overview of uranyl oxyfluorides topologies.

Insight into the uranyl oxyfluoride topologies through the synthesis and crystal structure new oxyfluoride compounds

253rd National Meeting (2017)

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