Abstract
The new anion [U2I10]2- has been isolated in the compound [Ta7(Se2)14][U 2I10]2 This compound was synthesized from the elements at 1173 K. It crystallizes in space group Cccm of the orthorhombic system with four formula units in a cell of dimensions a = 21.5134(9) Å, b = 22.1619(9) Å, and c = 16.7834(6) Å. The crystal structure comprises infinite [Ta(Se2)2]n cationic chains charge balanced by [U2I10]2- anions. The new [U2I10]2- anion is formed by two edgesharing UI6 octahedra. The U-I bond lengths are normal for tetravalent uranium. For charge balance, the [Ta7(Se2) 14]4+ cation must contain three TaIV and four TaV atoms. Charge is delocalized over this cation as the Ta⋯Ta interactions differ minimally.
Original language | English (US) |
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Pages (from-to) | 440-442 |
Number of pages | 3 |
Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
Volume | 636 |
Issue number | 3-4 |
DOIs | |
State | Published - Mar 2010 |
Keywords
- Decaiodobisuranium(IV) anion
- Iodine
- Selenium
- Tantalum
- Uranium
- X-ray diffraction
ASJC Scopus subject areas
- Inorganic Chemistry