New tantalum polychalcogenides with infinite anionic chains: K12Ta6Se35 and KTaTe3

O. Tougait; J. A. Ibers

doi:10.1016/S1293-2558(00)80104-1

New tantalum polychalcogenides with infinite anionic chains: K₁₂Ta₆Se₃₅ and KTaTe₃

O. Tougait^*, J. A. Ibers

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The new compounds K₁₂Ta₆Se₃₅ and KTaTe₃ have been synthesized through the reaction of Ta metal with a K₂Q_n (Q = Se, Te) flux. K₁₂Ta₆Se₃₅ crystallizes with 4 formula units in space group Pbcn of the orthorhombic system in a cell of dimensions a = 8.3390(17) Å, b = 13.259(3) Å, c = 56.023(11) Å (t = -120°C). KTaTe₃ crystallizes with 20 formula units (or 4 formula units of K₅Ta₅Te₁₅) in the monoclinic space group P2₁/c in a cell of dimension a = 7.7177(15) Å, b= 13.826(3) Å, c = 30.981(6) Å, and β = 90.11(3)° (t = -120°C). Each structure consists of infinite anionic chains of Ta-containing polyhedra well separated by K⁺ cations. In K₁₂Ta₆Se₃₅ there are Ta₂Se₁₁ units formed by the face sharing of two TaSe₇ elongated bipyramids. These Ta₂Se₁₁ units are in turn interconnected by Se₂ and Se₃ units to form _∞¹[Ta₆Se₃₅^12-] infinite chains. In KTaTe₃, the _∞¹[TaTe₃^-] infinite chains arise from the face sharing of distorted TaTe₆ octahedra.

Original language	English (US)
Pages (from-to)	523-534
Number of pages	12
Journal	Solid State Sciences
Volume	1
Issue number	7-8
DOIs	https://doi.org/10.1016/S1293-2558(00)80104-1
State	Published - 1999

Funding

This research was supported by the U. S. National Science Foundation under Grant DMR97-09351. Use was made of the MRL Central Facilities supported by the National Science Foundation at the Materials Research Center of Northwestern University under Grant No. DMR9632472. We acknowledge the significant contributions over the years that Marcel Sergent has made to solid-state chemistry and we wish him well in his retirement.

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/S1293-2558(00)80104-1

Cite this

@article{b9b5eb6c600d4f1fb25bc0253f5e9146,

title = "New tantalum polychalcogenides with infinite anionic chains: K12Ta6Se35 and KTaTe3",

abstract = "The new compounds K12Ta6Se35 and KTaTe3 have been synthesized through the reaction of Ta metal with a K2Qn (Q = Se, Te) flux. K12Ta6Se35 crystallizes with 4 formula units in space group Pbcn of the orthorhombic system in a cell of dimensions a = 8.3390(17) {\AA}, b = 13.259(3) {\AA}, c = 56.023(11) {\AA} (t = -120°C). KTaTe3 crystallizes with 20 formula units (or 4 formula units of K5Ta5Te15) in the monoclinic space group P21/c in a cell of dimension a = 7.7177(15) {\AA}, b= 13.826(3) {\AA}, c = 30.981(6) {\AA}, and β = 90.11(3)° (t = -120°C). Each structure consists of infinite anionic chains of Ta-containing polyhedra well separated by K+ cations. In K12Ta6Se35 there are Ta2Se11 units formed by the face sharing of two TaSe7 elongated bipyramids. These Ta2Se11 units are in turn interconnected by Se2 and Se3 units to form ∞1[Ta6Se3512-] infinite chains. In KTaTe3, the ∞1[TaTe3-] infinite chains arise from the face sharing of distorted TaTe6 octahedra.",

author = "O. Tougait and Ibers, {J. A.}",

note = "Funding Information: This research was supported by the U. S. National Science Foundation under Grant DMR97-09351. Use was made of the MRL Central Facilities supported by the National Science Foundation at the Materials Research Center of Northwestern University under Grant No. DMR9632472. We acknowledge the significant contributions over the years that Marcel Sergent has made to solid-state chemistry and we wish him well in his retirement.",

year = "1999",

doi = "10.1016/S1293-2558(00)80104-1",

language = "English (US)",

volume = "1",

pages = "523--534",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier Masson s.r.l.",

number = "7-8",

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TY - JOUR

T1 - New tantalum polychalcogenides with infinite anionic chains

T2 - K12Ta6Se35 and KTaTe3

AU - Tougait, O.

AU - Ibers, J. A.

N1 - Funding Information: This research was supported by the U. S. National Science Foundation under Grant DMR97-09351. Use was made of the MRL Central Facilities supported by the National Science Foundation at the Materials Research Center of Northwestern University under Grant No. DMR9632472. We acknowledge the significant contributions over the years that Marcel Sergent has made to solid-state chemistry and we wish him well in his retirement.

PY - 1999

Y1 - 1999

N2 - The new compounds K12Ta6Se35 and KTaTe3 have been synthesized through the reaction of Ta metal with a K2Qn (Q = Se, Te) flux. K12Ta6Se35 crystallizes with 4 formula units in space group Pbcn of the orthorhombic system in a cell of dimensions a = 8.3390(17) Å, b = 13.259(3) Å, c = 56.023(11) Å (t = -120°C). KTaTe3 crystallizes with 20 formula units (or 4 formula units of K5Ta5Te15) in the monoclinic space group P21/c in a cell of dimension a = 7.7177(15) Å, b= 13.826(3) Å, c = 30.981(6) Å, and β = 90.11(3)° (t = -120°C). Each structure consists of infinite anionic chains of Ta-containing polyhedra well separated by K+ cations. In K12Ta6Se35 there are Ta2Se11 units formed by the face sharing of two TaSe7 elongated bipyramids. These Ta2Se11 units are in turn interconnected by Se2 and Se3 units to form ∞1[Ta6Se3512-] infinite chains. In KTaTe3, the ∞1[TaTe3-] infinite chains arise from the face sharing of distorted TaTe6 octahedra.

AB - The new compounds K12Ta6Se35 and KTaTe3 have been synthesized through the reaction of Ta metal with a K2Qn (Q = Se, Te) flux. K12Ta6Se35 crystallizes with 4 formula units in space group Pbcn of the orthorhombic system in a cell of dimensions a = 8.3390(17) Å, b = 13.259(3) Å, c = 56.023(11) Å (t = -120°C). KTaTe3 crystallizes with 20 formula units (or 4 formula units of K5Ta5Te15) in the monoclinic space group P21/c in a cell of dimension a = 7.7177(15) Å, b= 13.826(3) Å, c = 30.981(6) Å, and β = 90.11(3)° (t = -120°C). Each structure consists of infinite anionic chains of Ta-containing polyhedra well separated by K+ cations. In K12Ta6Se35 there are Ta2Se11 units formed by the face sharing of two TaSe7 elongated bipyramids. These Ta2Se11 units are in turn interconnected by Se2 and Se3 units to form ∞1[Ta6Se3512-] infinite chains. In KTaTe3, the ∞1[TaTe3-] infinite chains arise from the face sharing of distorted TaTe6 octahedra.

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