Syntheses, crystal structures, and characterization of two new Tl +-Cu2+-Te6+ oxides: Tl4CuTeO 6 and Tl6CuTe2O10

Jeongho Yeon; Sang Hwan Kim; Mark A. Green; Kanwal Preet Bhatti; C. Leighton; P. Shiv Halasyamani

doi:10.1016/j.jssc.2012.07.012

Syntheses, crystal structures, and characterization of two new Tl ⁺-Cu²⁺-Te⁶⁺ oxides: Tl₄CuTeO ₆ and Tl₆CuTe₂O₁₀

Jeongho Yeon, Sang Hwan Kim, Mark A. Green, Kanwal Preet Bhatti, C. Leighton, P. Shiv Halasyamani

Chemical Engineering and Materials Science

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

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Abstract

Crystals and polycrystalline powders of two new oxide materials, Tl ₄CuTeO6 and Tl₆CuTe₂O₁₀, have been synthesized by hydrothermal and solid-state methods. The materials were structurally characterized by single-crystal X-ray diffraction. Tl ₄CuTeO6 and Tl₆CuTe₂O₁₀ exhibit one dimensional anionic slabs of [CuTeO₆]⁴∼ and [CuTe ₂O₁₀]⁶∼, respectively. Common to both slabs is the occurrence of Cu²⁺O₄ distorted squares and Te ⁶⁺O₆ octahedra. The slabs are separated by Tl⁺ cations. For Tl₄CuTeO₆, magnetic measurements indicate a maximum at ∼8 K in the temperature dependence of the susceptibility. Low temperature neutron diffraction data confirm no long-range magnetic ordering occurs and the susceptibility was adequately accounted for by fits to a Heisenberg alternating chain model. For Tl₆CuTe₂O ₁₀ on the other hand, magnetic measurements revealed paramagnetism with no evidence of long-range magnetic ordering. Infrared, UV-vis spectra, thermogravimetric, and differential thermal analyses are also reported. Crystal data: Tl₄CuTeO₆, Triclinic, space group P-1 (No. 2), a=5.8629(8)A, b=8.7848(11) A, c=9.2572(12)A, α = 66.0460(10), β = 74.2010(10), γ = 79.254(2), V=417.70(9) A ³, andZ=2; Tl ₆CuTe₂O₁₀, orthorhombic, space group Pnma (No. 62), a=10.8628(6) Å, b=11.4962(7)Å, c=10.7238(6) Å, V= 1339.20(13) Å³, and Z=4.

Original language	English (US)
Pages (from-to)	607-613
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	196
DOIs	https://doi.org/10.1016/j.jssc.2012.07.012
State	Published - Dec 2012

Bibliographical note

Funding Information:
JY, S-HK, and PSH thank the Robert A. Welch Foundation (Grant E-1457) and the Texas Center for Superconductivity for support. JY thanks the International Centre for Diffraction Data for 2011 Ludo Frevel Crystallography Scholarship Award. We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work. Work at UMN, specifically the magnetic characterization, was supported by DOE under DE-FG02-06ER46275 .

Keywords

Crystal structures
Magnetic interactions
Oxides
Thallium

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10.1016/j.jssc.2012.07.012

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@article{b5042759105647c286345d61814613b1,

title = "Syntheses, crystal structures, and characterization of two new Tl +-Cu2+-Te6+ oxides: Tl4CuTeO 6 and Tl6CuTe2O10",

abstract = "Crystals and polycrystalline powders of two new oxide materials, Tl 4CuTeO6 and Tl6CuTe2O10, have been synthesized by hydrothermal and solid-state methods. The materials were structurally characterized by single-crystal X-ray diffraction. Tl 4CuTeO6 and Tl6CuTe2O10 exhibit one dimensional anionic slabs of [CuTeO6]4∼ and [CuTe 2O10]6∼, respectively. Common to both slabs is the occurrence of Cu2+O4 distorted squares and Te 6+O6 octahedra. The slabs are separated by Tl+ cations. For Tl4CuTeO6, magnetic measurements indicate a maximum at ∼8 K in the temperature dependence of the susceptibility. Low temperature neutron diffraction data confirm no long-range magnetic ordering occurs and the susceptibility was adequately accounted for by fits to a Heisenberg alternating chain model. For Tl6CuTe2O 10 on the other hand, magnetic measurements revealed paramagnetism with no evidence of long-range magnetic ordering. Infrared, UV-vis spectra, thermogravimetric, and differential thermal analyses are also reported. Crystal data: Tl4CuTeO6, Triclinic, space group P-1 (No. 2), a=5.8629(8)A, b=8.7848(11) A, c=9.2572(12)A, α = 66.0460(10), β = 74.2010(10), γ = 79.254(2), V=417.70(9) A 3, andZ=2; Tl 6CuTe2O10, orthorhombic, space group Pnma (No. 62), a=10.8628(6) {\AA}, b=11.4962(7){\AA}, c=10.7238(6) {\AA}, V= 1339.20(13) {\AA}3, and Z=4.",

keywords = "Crystal structures, Magnetic interactions, Oxides, Thallium",

author = "Jeongho Yeon and Kim, {Sang Hwan} and Green, {Mark A.} and Bhatti, {Kanwal Preet} and C. Leighton and Halasyamani, {P. Shiv}",

note = "Funding Information: JY, S-HK, and PSH thank the Robert A. Welch Foundation (Grant E-1457) and the Texas Center for Superconductivity for support. JY thanks the International Centre for Diffraction Data for 2011 Ludo Frevel Crystallography Scholarship Award. We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work. Work at UMN, specifically the magnetic characterization, was supported by DOE under DE-FG02-06ER46275 . ",

year = "2012",

month = dec,

doi = "10.1016/j.jssc.2012.07.012",

language = "English (US)",

volume = "196",

pages = "607--613",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Syntheses, crystal structures, and characterization of two new Tl +-Cu2+-Te6+ oxides

T2 - Tl4CuTeO 6 and Tl6CuTe2O10

AU - Yeon, Jeongho

AU - Kim, Sang Hwan

AU - Green, Mark A.

AU - Bhatti, Kanwal Preet

AU - Leighton, C.

AU - Halasyamani, P. Shiv

N1 - Funding Information: JY, S-HK, and PSH thank the Robert A. Welch Foundation (Grant E-1457) and the Texas Center for Superconductivity for support. JY thanks the International Centre for Diffraction Data for 2011 Ludo Frevel Crystallography Scholarship Award. We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work. Work at UMN, specifically the magnetic characterization, was supported by DOE under DE-FG02-06ER46275 .

PY - 2012/12

Y1 - 2012/12

N2 - Crystals and polycrystalline powders of two new oxide materials, Tl 4CuTeO6 and Tl6CuTe2O10, have been synthesized by hydrothermal and solid-state methods. The materials were structurally characterized by single-crystal X-ray diffraction. Tl 4CuTeO6 and Tl6CuTe2O10 exhibit one dimensional anionic slabs of [CuTeO6]4∼ and [CuTe 2O10]6∼, respectively. Common to both slabs is the occurrence of Cu2+O4 distorted squares and Te 6+O6 octahedra. The slabs are separated by Tl+ cations. For Tl4CuTeO6, magnetic measurements indicate a maximum at ∼8 K in the temperature dependence of the susceptibility. Low temperature neutron diffraction data confirm no long-range magnetic ordering occurs and the susceptibility was adequately accounted for by fits to a Heisenberg alternating chain model. For Tl6CuTe2O 10 on the other hand, magnetic measurements revealed paramagnetism with no evidence of long-range magnetic ordering. Infrared, UV-vis spectra, thermogravimetric, and differential thermal analyses are also reported. Crystal data: Tl4CuTeO6, Triclinic, space group P-1 (No. 2), a=5.8629(8)A, b=8.7848(11) A, c=9.2572(12)A, α = 66.0460(10), β = 74.2010(10), γ = 79.254(2), V=417.70(9) A 3, andZ=2; Tl 6CuTe2O10, orthorhombic, space group Pnma (No. 62), a=10.8628(6) Å, b=11.4962(7)Å, c=10.7238(6) Å, V= 1339.20(13) Å3, and Z=4.

AB - Crystals and polycrystalline powders of two new oxide materials, Tl 4CuTeO6 and Tl6CuTe2O10, have been synthesized by hydrothermal and solid-state methods. The materials were structurally characterized by single-crystal X-ray diffraction. Tl 4CuTeO6 and Tl6CuTe2O10 exhibit one dimensional anionic slabs of [CuTeO6]4∼ and [CuTe 2O10]6∼, respectively. Common to both slabs is the occurrence of Cu2+O4 distorted squares and Te 6+O6 octahedra. The slabs are separated by Tl+ cations. For Tl4CuTeO6, magnetic measurements indicate a maximum at ∼8 K in the temperature dependence of the susceptibility. Low temperature neutron diffraction data confirm no long-range magnetic ordering occurs and the susceptibility was adequately accounted for by fits to a Heisenberg alternating chain model. For Tl6CuTe2O 10 on the other hand, magnetic measurements revealed paramagnetism with no evidence of long-range magnetic ordering. Infrared, UV-vis spectra, thermogravimetric, and differential thermal analyses are also reported. Crystal data: Tl4CuTeO6, Triclinic, space group P-1 (No. 2), a=5.8629(8)A, b=8.7848(11) A, c=9.2572(12)A, α = 66.0460(10), β = 74.2010(10), γ = 79.254(2), V=417.70(9) A 3, andZ=2; Tl 6CuTe2O10, orthorhombic, space group Pnma (No. 62), a=10.8628(6) Å, b=11.4962(7)Å, c=10.7238(6) Å, V= 1339.20(13) Å3, and Z=4.

KW - Crystal structures

KW - Magnetic interactions

KW - Oxides

KW - Thallium

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U2 - 10.1016/j.jssc.2012.07.012

DO - 10.1016/j.jssc.2012.07.012

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AN - SCOPUS:84867653705

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VL - 196

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JO - Journal of Solid State Chemistry

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