K(Th0.75Sr0.25)2Se6: Structural Change Resulting from the Disorder of Differently Charged Cations

Mesbah, Adel and Jai, Prakash and Beard, Jessica C and Malliakas, Christos D and Ibers, James A (2018) K(Th0.75Sr0.25)2Se6: Structural Change Resulting from the Disorder of Differently Charged Cations. Inorganic Chemistry, 57 (13). pp. 7877-7880. ISSN 0020-1669

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Abstract

Single crystals of K(Th0.75Sr0.25)2Se6 were obtained by a standard solid-state chemistry route at 1173 K. This compound does not belong to the AAn2Q6 family (A = K, Rb, Cs, or Tl; An = Th, U, or Np; Q = S, Se, or Te) that possesses infinite Q–Q–Q chains and where a charge distribution of A+, 2 × An4+, 2 × Q2–, 2 × (Q22.5–) has been proposed and hence a charge of −1.25 on Q of the “dichalcogenide”. Rather in K(Th0.75Sr0.25)2Se6, where the Th and Sr cations randomly occupy the same site, incorporation of these differently charged cations breaks the infinite Se–Se–Se chains into a structure that has typical Se22– pairs.

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IITH Creators:
IITH CreatorsORCiD
Jai, PrakashUNSPECIFIED
Item Type: Article
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 26 Jul 2018 06:59
Last Modified: 26 Jul 2018 06:59
URI: http://raiith.iith.ac.in/id/eprint/4315
Publisher URL: http://doi.org/10.1021/acs.inorgchem.8b00925
OA policy: http://www.sherpa.ac.uk/romeo/issn/0020-1669/
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