X-ray structure determination of two related uranyl phosphate crown ether compounds
| Autor: | Brian L. Scott, Heather T. Hawkins, Janet A. Danis, Bryan W. Eichhorn, Wolfgang Runde, Barry E. Scheetz |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Hydrogen Inorganic chemistry chemistry.chemical_element Crystal structure Uranium Uranyl Phosphate Inorganic Chemistry chemistry.chemical_compound Crystallography Pentagonal bipyramidal molecular geometry chemistry Materials Chemistry Molecule Physical and Theoretical Chemistry Crown ether |
| Zdroj: | Polyhedron. 19:1551-1557 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/s0277-5387(00)00408-3 |
| Popis: | Two new uranyl phosphate compounds have been prepared and their structures determined. [UO2(H2PO4)2(H2O)]2·(18-crown-6)·5H2O (1) and UO2(H2PO4)2(H2O)·(18-crown-6)·3H2O (2) contain neutral one-dimensional [UO2(H2PO4)2(H2O)]∞ chains that are nearly identical to those of a previously reported binary phosphate, UO2(H2PO4)2(H2O)·2H2O (3). The new compounds, however, crystallized with either one-half or one 18-crown-6 molecule per uranium atom for 1 and 2, respectively. The seven-coordinate uranium(VI) assumes a pentagonal bipyramidal configuration, which is common for uranyl compounds. Empty 18-crown-6 molecules are hydrogen bonded to the uranyl phosphate chains as well as to lattice water molecules and function as ‘packing-directing’ agents. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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