APSe(6) (A = k, Rb, and Cs): Polymeric selenophosphates with reversible phase-change properties

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The ternary alkali selenophosphates KPSe6 and RbPSe6 crystallize in the polar orthorhombic space group Pca2(1) with a = 11.7764(17) Angstrom, b = 6.8580(10) Angstrom, c = 11.4596(16) Angstrom, and Z = 4 for RbPSe6. CsPSe6 crystallizes in the monoclinic space group P2/n with a = 6.877(3) Angstrom, b = 12.713(4) Angstrom, c = 11.242(4) Angstrom, beta = 92.735(7)degrees, and Z= 4. All compounds feature the one-dimensional infinite chain of [PSe2(Se)(4)(-)], where each P atom is connected with Se-4(2-) bridge. These compounds show reversible glass-crystal transition, and P-31 NMR data suggest that crystallization and infinite [PSe6-] chain formation are coupled processes.
Publisher
AMER CHEMICAL SOC
Issue Date
2004-05
Language
English
Article Type
Article
Keywords

METAL POLYSELENOPHOSPHATE FLUXES; ANION; FRAGMENTS; BONDS

Citation

INORGANIC CHEMISTRY, v.43, no.9, pp.2762 - 2764

ISSN
0020-1669
DOI
10.1021/ic035448q
URI
http://hdl.handle.net/10203/255898
Appears in Collection
NT-Journal Papers(저널논문)
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