Abstract
The new phase RbUSb0.33Te6 is described. The structure of RbUSb0.33Te6 is acentric and trigonal (space group P3) with infinite [UTe6]2- columns running along the c axis. The structure has straight [UTe6]6- columns in which the U atoms adopt distorted tri-capped trigonal prisms. The central axis in the [UTe6]2- columns is defined by a row of U atoms 4.064 (1) apart, i.e., a metal "wire" seethed with what appear to be three infinite zig-zag Te chains. The crystals, however, exhibit a super-structure that results in a rhombohedral space group which is 9 times larger (asuper = √3asub, bsuper = √3bsub, csuper = 3csub) than that of the ideal P3 structure. The superstructure is caused by a periodic modulation of Te - Te distances in the zig-zag chains. The almost equal Te - Te distances in the infinite chains are in fact dimers, trimers, and pentamers. The material is a narrow gap semiconductor with a room temperature electrical conductivity of ∼ 40 S/cm.
| Original language | English |
|---|---|
| Pages (from-to) | 17-22 |
| Number of pages | 6 |
| Journal | Journal of Solid State Chemistry |
| Volume | 161 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2001 |
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Keywords
- Actinides
- Peierls distortion
- Polytelluride
- Superstructure
- Tellurium chains
ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
Unique periodic modulations in the infinite [Tex]n-chains of RbUSB0.33Te6 . / Choi, Kyoung Shin; Kanatzidis, Mercouri G.
In: Journal of Solid State Chemistry, Vol. 161, No. 1, 2001, p. 17-22.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Unique periodic modulations in the infinite [Tex]n-chains of RbUSB0.33Te6
AU - Choi, Kyoung Shin
AU - Kanatzidis, Mercouri G
PY - 2001
Y1 - 2001
N2 - The new phase RbUSb0.33Te6 is described. The structure of RbUSb0.33Te6 is acentric and trigonal (space group P3) with infinite [UTe6]2- columns running along the c axis. The structure has straight [UTe6]6- columns in which the U atoms adopt distorted tri-capped trigonal prisms. The central axis in the [UTe6]2- columns is defined by a row of U atoms 4.064 (1) apart, i.e., a metal "wire" seethed with what appear to be three infinite zig-zag Te chains. The crystals, however, exhibit a super-structure that results in a rhombohedral space group which is 9 times larger (asuper = √3asub, bsuper = √3bsub, csuper = 3csub) than that of the ideal P3 structure. The superstructure is caused by a periodic modulation of Te - Te distances in the zig-zag chains. The almost equal Te - Te distances in the infinite chains are in fact dimers, trimers, and pentamers. The material is a narrow gap semiconductor with a room temperature electrical conductivity of ∼ 40 S/cm.
AB - The new phase RbUSb0.33Te6 is described. The structure of RbUSb0.33Te6 is acentric and trigonal (space group P3) with infinite [UTe6]2- columns running along the c axis. The structure has straight [UTe6]6- columns in which the U atoms adopt distorted tri-capped trigonal prisms. The central axis in the [UTe6]2- columns is defined by a row of U atoms 4.064 (1) apart, i.e., a metal "wire" seethed with what appear to be three infinite zig-zag Te chains. The crystals, however, exhibit a super-structure that results in a rhombohedral space group which is 9 times larger (asuper = √3asub, bsuper = √3bsub, csuper = 3csub) than that of the ideal P3 structure. The superstructure is caused by a periodic modulation of Te - Te distances in the zig-zag chains. The almost equal Te - Te distances in the infinite chains are in fact dimers, trimers, and pentamers. The material is a narrow gap semiconductor with a room temperature electrical conductivity of ∼ 40 S/cm.
KW - Actinides
KW - Peierls distortion
KW - Polytelluride
KW - Superstructure
KW - Tellurium chains
UR - http://www.scopus.com/inward/record.url?scp=0034759464&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034759464&partnerID=8YFLogxK
U2 - 10.1006/jssc.2001.9261
DO - 10.1006/jssc.2001.9261
M3 - Article
VL - 161
SP - 17
EP - 22
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 1
ER -