Abstract
Four new hybrid organic-inorganic uranyl phosphate compounds were structurally characterized after single crystals were grown via ionothermal synthesis using the ionic liquids 1-ethyl-3-methylimidazolium dimethyl phosphate and 1-ethyl-3-methylimidazolium dibutyl phosphate. Three of the new crystal structures presented here incorporate dimethyl or monomethyl phosphate ligands into the structural unit to form one chain-based compound and two sheet-based compounds. One of the structures utilizes dibutyl phosphate to form a previously reported uranyl compound, a structural polymorph that crystallized in space group P21/c in contrast to the previously reported P-1 structure. The structural and topological relationships are compared to those of uranyl phosphate minerals as well as previously reported organophosphate compounds. The roles of the organics on the phosphate anions in impacting uranyl coordination and stabilizing the crystal structures are discussed.
| Original language | English |
|---|---|
| Article number | e202200162 |
| Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Volume | 648 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 13 2022 |
Funding
This work is supported by the Department of Energy, Basic Energy Sciences, Heavy Elements Program under grant number: DE-FG02-07ER15880. Single-crystal X-ray analyses were conducted at the Materials Characterization Facility of the Center of Sustainable Energy at the University of Notre Dame. CCDC Deposition Numbers 2168258–2168262 contain the supplementary crystallographic data for this paper. This data can be obtained free of charge via https://www.ccdc.cam.ac.uk/, or by contacting The Cambridge Crystallographic Data Center, 12, Union Road, Cambridge, CB2 1EZ, UK; fax: +441223336033.
Keywords
- Coordination
- Ionic liquid
- Organophosphate
- Uranyl
- X-ray diffraction