Synthesis and structures of Cs3TaSe4 and Cs3NbSe4

Hoseop Yun; Clayton R. Randall; James A. Ibers

doi:10.1016/0022-4596(88)90197-1

Synthesis and structures of Cs₃TaSe₄ and Cs₃NbSe₄

Hoseop Yun^*, Clayton R. Randall, James A. Ibers

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article

28 Scopus citations

Abstract

A study of the alkali metal tetraselenometalate system has afforded two new isostructural phases, Cs₃TaSe₄ and Cs₃NbSe₄. The structures of these phases have been determined by X-ray and neutron powder diffraction techniques. Cs₃TaSe₄ crystallizes in the orthorhombic system (D¹⁶_2h-Pnma, a = 10.277(1), b = 11.918(1), c = 10.238(1) Å) with four formula units in the cell. The structure contains discrete TaSe^3-₄ ions (TaSe, 2.369(4), 2.374(7), 2.397(6) Å) and Cs⁺ cations. Out to 4 Å the Cs cations are surrounded by five or seven Se atoms.

Original language	English (US)
Pages (from-to)	109-114
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	76
Issue number	1
DOIs	https://doi.org/10.1016/0022-4596(88)90197-1
State	Published - Sep 1988

ASJC Scopus subject areas

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

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Yun, H., Randall, C. R., & Ibers, J. A. (1988). Synthesis and structures of Cs₃TaSe₄ and Cs₃NbSe₄. Journal of Solid State Chemistry, 76(1), 109-114. https://doi.org/10.1016/0022-4596(88)90197-1

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abstract = "A study of the alkali metal tetraselenometalate system has afforded two new isostructural phases, Cs3TaSe4 and Cs3NbSe4. The structures of these phases have been determined by X-ray and neutron powder diffraction techniques. Cs3TaSe4 crystallizes in the orthorhombic system (D162h-Pnma, a = 10.277(1), b = 11.918(1), c = 10.238(1) {\AA}) with four formula units in the cell. The structure contains discrete TaSe3-4 ions (TaSe, 2.369(4), 2.374(7), 2.397(6) {\AA}) and Cs+ cations. Out to 4 {\AA} the Cs cations are surrounded by five or seven Se atoms.",

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N2 - A study of the alkali metal tetraselenometalate system has afforded two new isostructural phases, Cs3TaSe4 and Cs3NbSe4. The structures of these phases have been determined by X-ray and neutron powder diffraction techniques. Cs3TaSe4 crystallizes in the orthorhombic system (D162h-Pnma, a = 10.277(1), b = 11.918(1), c = 10.238(1) Å) with four formula units in the cell. The structure contains discrete TaSe3-4 ions (TaSe, 2.369(4), 2.374(7), 2.397(6) Å) and Cs+ cations. Out to 4 Å the Cs cations are surrounded by five or seven Se atoms.

AB - A study of the alkali metal tetraselenometalate system has afforded two new isostructural phases, Cs3TaSe4 and Cs3NbSe4. The structures of these phases have been determined by X-ray and neutron powder diffraction techniques. Cs3TaSe4 crystallizes in the orthorhombic system (D162h-Pnma, a = 10.277(1), b = 11.918(1), c = 10.238(1) Å) with four formula units in the cell. The structure contains discrete TaSe3-4 ions (TaSe, 2.369(4), 2.374(7), 2.397(6) Å) and Cs+ cations. Out to 4 Å the Cs cations are surrounded by five or seven Se atoms.

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