Synthesis, single-crystal structure, and optical absorption of Rb 2Th7Se15

Lukasz A. Koscielski, Eric A. Pozzi, Richard P Van Duyne, James A Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The compound Rb2Th7Se15 has been synthesized by the solid-state reaction at 1273 K of Th, Rb2Se 3, Se, and Ge, and its structure has been determined by single-crystal X-ray diffraction methods. Red crystals of Rb2Th 7Se15 crystallize at 100(2) K with four formula units in a new structure type in the monoclinic space group C5 2h-P21/c. The structure is three-dimensional and comprises Rb and Th atoms coordinated by Se atoms to form nine-, eight-, and seven-coordinate polyhedra. Infinite channels that contain Rb atoms are present. Crystals of Rb2Th7Se15 are red in color; an indirect band gap of 1.83 eV was derived from single-crystal optical measurements.

Original languageEnglish (US)
Pages (from-to)1-4
Number of pages4
JournalJournal of Solid State Chemistry
Volume205
DOIs
StatePublished - Jan 1 2013

    Fingerprint

Keywords

  • Band gap
  • Crystal structure
  • Rubidium
  • Selenium
  • Synthesis
  • Thorium

ASJC Scopus subject areas

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

Cite this