Syntheses, structures, and magnetic and optical properties of the compounds [Hg3Te2][UCl6] and [Hg4As2][UCl6]

Daniel E. Bugaris, James A. Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Two new quaternary salts, [Hg3Te2][UCl6] and [Hg4As2][UCl6], have been synthesized and their structures determined by single-crystal X-ray diffraction analysis. [Hg3Te2][UCl6] is the product of a reaction involving UCl4, HgCl2, and HgTe at 873 K. The compound crystallizes in space group P21/c of the monoclinic system. [Hg4As2][UCl6] results from the reaction of U, Hg2Cl2, and As at 788 K. It crystallizes in space group Pbca of the orthorhombic system. [Hg3Te2][UCl6] has a two-dimensional framework of 2 [Hg3 Te22 +] layers, whereas [Hg4As2][UCl6] has a three-dimensional framework of 2 [Hg3 As2] layers interconnected by Hg atoms linearly bonded to As atoms. Both framework structures contain discrete [UCl6]2- anions between the layers. [Hg3Te2][UCl6] exhibits temperature-independent paramagnetism. The optical absorption spectra of these compounds display f-f transitions.

Original languageEnglish (US)
Pages (from-to)3189-3193
Number of pages5
JournalJournal of Solid State Chemistry
Volume181
Issue number12
DOIs
StatePublished - Dec 2008

Keywords

  • Crystal structures
  • Syntheses
  • Uranium mercury chalcogenide
  • Uranium mercury pnictide
  • [UCl]

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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