The [U2i10]2- anion: Synthesis and structure of [Ta7(Se2)14][U2i 10]2

Daniel M. Wells, James A. Ibers

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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 languageEnglish (US)
Pages (from-to)440-442
Number of pages3
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number3-4
StatePublished - Mar 1 2010


  • Decaiodobisuranium(IV) anion
  • Iodine
  • Selenium
  • Tantalum
  • Uranium
  • X-ray diffraction

ASJC Scopus subject areas

  • Inorganic Chemistry

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