Issue 3, 2015

Quaternary rare-earth selenides with closed cavities: Cs[RE9Mn4Se18] (RE = Ho–Lu)

Abstract

New quaternary selenides, Cs[RE9Mn4Se18] (RE = Ho–Lu), have been synthesized by high temperature solid state reactions of elements with a reactive CsCl flux. These compounds adopt the BaV13O18-structure type in the trigonal space group R[3 with combining macron] (no. 148) with a = 17.4867(8)–17.263(2) Å, c = 9.7996(8)–9.681(2) Å and Z = 3. The major structure motif is the 3D network that is constructed by octahedra of MSe6 (centered by disordered Mn and RE) and RESe6, in which closed cavities of cuboctahedra Cs@Se12 are embedded. This work extends the previously established empirical A/M-structure correlation in the ternary A/RE/Q system into quaternary A/RE/TM/Q, and A/M = 0.08 (A = the number of alkali metals, M = the sum of the numbers of RE and TM metals) represents the minimum ending value. The syntheses, properties, and theoretical analyses of the title compounds are also discussed.

Graphical abstract: Quaternary rare-earth selenides with closed cavities: Cs[RE9Mn4Se18] (RE = Ho–Lu)

Supplementary files

Article information

Article type
Research Article
Submitted
11 Nov 2014
Accepted
16 Jan 2015
First published
21 Jan 2015

Inorg. Chem. Front., 2015,2, 298-305

Quaternary rare-earth selenides with closed cavities: Cs[RE9Mn4Se18] (RE = Ho–Lu)

H. Lin, J. Shen, Y. Shi, L. Li and L. Chen, Inorg. Chem. Front., 2015, 2, 298 DOI: 10.1039/C4QI00202D

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