Synthesis and structure of layered thorium telluride CsTh{sub 2}Te{sub 6}

Journal Article · Wed Jun 19 04:00:00 EDT 1996 · Inorganic Chemistry

DOI:https://doi.org/10.1021/ic951641b· OSTI ID:274269

Cody, J A; Ibers, J A ^[1]

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1. Northwestern Univ., Evanston, IL (United States)

The compound CsTh{sub 2}Te{sub 6} has been synthesized at 800 {degrees}C by the reaction of Th with a Cs{sub 2}Te{sub 3}/Te melt as a reactive flux. The structure of CsTh{sub 2}Te{sub 6} has been determined from single-crystal X-ray data. The structure comprises infinite, two-dimensional double layers of ThTe{sub 8}-bicapped trigonal prisms. The structural motif of the trigonal prisms resembles that found in UTe{sub 2}. Cs{sup +} cations, disordered equally over two crystallographically equivalent sites, separate the layers and are coordinated by eight Te atoms at the corners of a rectangular parallelepiped. Short Te-Te distances of 3.052(3) and 3.088(3) {Angstrom} form linear, infinite, one-dimensional chains within the layers. Simple formalisms describe neither the Te-Te bonding in the chain nor the oxidation state of Th. The compound shows weak semiconducting behavior along the Th/Te layers perpendicular to the Te-Te chain.

• OSTI ID: 274269
• Journal Information: Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 13 Vol. 35; ISSN 0020-1669; ISSN INOCAJ
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
CESIUM TELLURIDES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
OXIDATION
THORIUM TELLURIDES
X-RAY DIFFRACTION