Synthesis, structure, and magnetic and electronic properties of Cs2Hg2USe5

Daniel E. Bugaris; Daniel M. Wells; James A. Ibers

doi:10.1016/j.jssc.2009.01.013

Synthesis, structure, and magnetic and electronic properties of Cs₂Hg₂USe₅

Daniel E. Bugaris, Daniel M. Wells, James A. Ibers^*

^*Corresponding author for this work

Chemistry

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

12 Scopus citations

Abstract

The compound Cs₂Hg₂USe₅ was obtained from the solid-state reaction of U, HgSe, Cs₂Se₃, Se, and CsI at 1123 K. This material crystallizes in a new structure type in space group P2/n of the monoclinic system with a cell of dimensions a=10.276(6) Å, b=4.299(2) Å, c=15.432(9) Å, β=101.857(6) Å, and V=667.2(6) Å³. The structure contains _∞² [Hg₂ USe₅] layers separated by Cs atoms. Within the layers are distorted HgSe₄ tetrahedra and regular USe₆ octahedra. In the temperature range of 25-300 K Cs₂Hg₂USe₅ displays Curie-Weiss paramagnetism with μ_eff=3.71(2) μ_B. The compound exhibits semiconducting behavior in the [010] direction; the conductivity at 298 K is 3×10^-3 S/cm. Formal oxidation states of Cs/Hg/U/Se may be assigned as +1/+2/+4/- 2, respectively.

Original language	English (US)
Pages (from-to)	1017-1020
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	182
Issue number	5
DOIs	https://doi.org/10.1016/j.jssc.2009.01.013
State	Published - May 2009

Funding

This research was supported by the US Department of Energy BES Grant ER-15522.

Keywords

Crystal structure
Electrical conductivity
Magnetism
Synthesis
Uranium mercury chalcogenide

ASJC Scopus subject areas

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

Access to Document

10.1016/j.jssc.2009.01.013

Cite this

@article{e872b2bdba9f457aa94647560151e212,

title = "Synthesis, structure, and magnetic and electronic properties of Cs2Hg2USe5",

abstract = "The compound Cs2Hg2USe5 was obtained from the solid-state reaction of U, HgSe, Cs2Se3, Se, and CsI at 1123 K. This material crystallizes in a new structure type in space group P2/n of the monoclinic system with a cell of dimensions a=10.276(6) {\AA}, b=4.299(2) {\AA}, c=15.432(9) {\AA}, β=101.857(6) {\AA}, and V=667.2(6) {\AA}3. The structure contains ∞2 [Hg2 USe5] layers separated by Cs atoms. Within the layers are distorted HgSe4 tetrahedra and regular USe6 octahedra. In the temperature range of 25-300 K Cs2Hg2USe5 displays Curie-Weiss paramagnetism with μeff=3.71(2) μB. The compound exhibits semiconducting behavior in the [010] direction; the conductivity at 298 K is 3×10-3 S/cm. Formal oxidation states of Cs/Hg/U/Se may be assigned as +1/+2/+4/- 2, respectively.",

keywords = "Crystal structure, Electrical conductivity, Magnetism, Synthesis, Uranium mercury chalcogenide",

author = "Bugaris, {Daniel E.} and Wells, {Daniel M.} and Ibers, {James A.}",

note = "Funding Information: This research was supported by the US Department of Energy BES Grant ER-15522. ",

year = "2009",

month = may,

doi = "10.1016/j.jssc.2009.01.013",

language = "English (US)",

volume = "182",

pages = "1017--1020",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "5",

}

TY - JOUR

T1 - Synthesis, structure, and magnetic and electronic properties of Cs2Hg2USe5

AU - Bugaris, Daniel E.

AU - Wells, Daniel M.

AU - Ibers, James A.

N1 - Funding Information: This research was supported by the US Department of Energy BES Grant ER-15522.

PY - 2009/5

Y1 - 2009/5

N2 - The compound Cs2Hg2USe5 was obtained from the solid-state reaction of U, HgSe, Cs2Se3, Se, and CsI at 1123 K. This material crystallizes in a new structure type in space group P2/n of the monoclinic system with a cell of dimensions a=10.276(6) Å, b=4.299(2) Å, c=15.432(9) Å, β=101.857(6) Å, and V=667.2(6) Å3. The structure contains ∞2 [Hg2 USe5] layers separated by Cs atoms. Within the layers are distorted HgSe4 tetrahedra and regular USe6 octahedra. In the temperature range of 25-300 K Cs2Hg2USe5 displays Curie-Weiss paramagnetism with μeff=3.71(2) μB. The compound exhibits semiconducting behavior in the [010] direction; the conductivity at 298 K is 3×10-3 S/cm. Formal oxidation states of Cs/Hg/U/Se may be assigned as +1/+2/+4/- 2, respectively.

AB - The compound Cs2Hg2USe5 was obtained from the solid-state reaction of U, HgSe, Cs2Se3, Se, and CsI at 1123 K. This material crystallizes in a new structure type in space group P2/n of the monoclinic system with a cell of dimensions a=10.276(6) Å, b=4.299(2) Å, c=15.432(9) Å, β=101.857(6) Å, and V=667.2(6) Å3. The structure contains ∞2 [Hg2 USe5] layers separated by Cs atoms. Within the layers are distorted HgSe4 tetrahedra and regular USe6 octahedra. In the temperature range of 25-300 K Cs2Hg2USe5 displays Curie-Weiss paramagnetism with μeff=3.71(2) μB. The compound exhibits semiconducting behavior in the [010] direction; the conductivity at 298 K is 3×10-3 S/cm. Formal oxidation states of Cs/Hg/U/Se may be assigned as +1/+2/+4/- 2, respectively.

KW - Crystal structure

KW - Electrical conductivity

KW - Magnetism

KW - Synthesis

KW - Uranium mercury chalcogenide

UR - http://www.scopus.com/inward/record.url?scp=65049090426&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65049090426&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2009.01.013

DO - 10.1016/j.jssc.2009.01.013

M3 - Article

AN - SCOPUS:65049090426

SN - 0022-4596

VL - 182

SP - 1017

EP - 1020

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 5

ER -