Structural Variations and Bonding Analysis of the Rare-Earth Metal Tellurides RETe1.875±δ (RE = Ce, Pr, Sm, Gd; 0.004 ≤ δ ≤ 0.025).
Structural Variations and Bonding Analysis of the Rare-Earth Metal Tellurides RETe1.875±δ (RE = Ce, Pr, Sm, Gd; 0.004 ≤ δ ≤ 0.025).
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稀土金属碲化物 RETe1 875±δ 的结构变化和成键分析 (RE = Ce, Pr, Sm, Gd; 0 004 ≤ δ ≤ 0 025)
DOI:
10.1021/acs.inorgchem.1c01230
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发表时间:
2021
影响因子:
4.6
通讯作者:
Th. Doert
中科院分区:
文献类型:
--
作者:
H. Poddig;P. Gebauer;K. Finzel;K. Stöwe;Th. Doert
Crystals ofRETe1.875±δ(RE= Ce, Pr, Sm, Gd; 0.004 ≤ δ ≤ 0.025) were grown using alkali halide flux and chemical transport reactions. The crystal structures are described in space groupAmm2 (no. 38), with lattice parameters ofa= 13.3729(5) Å,b= 17.7918(5) Å,c= 18.1561(4) Å for CeTe1.87(1)(T= 100 K),a= 13.271(2) Å,b= 17.747(3) Å,c= 18.160(3) Å for PrTe1.85(1)(T= 100 K),a= 13.1251(6) Å,b= 17.4269(8) Å,c= 17.8808(8) Å for SmTe1.87(1)(T= 100 K), anda= 13.1762(4) Å,b= 17.4995(5) Å,c= 17.9591(5) Å for GdTe1.88(1)(T= 296 K). The structures contain alternating stacks of puckered [RETe] slabs and planar [Te] layers. The latter are composed of small anionic entities, such as Te2–and Te22–, along with a large anionic eight-membered Te ring, as supported by electron localizability indicator-based bond analysis for an ordered model of GdTe1.875. Slightly different patterns for individual compounds indicate a considerable structural flexibility. Temperature-dependent resistance measurements confirm semiconducting behavior for PrTe1.875±δand GdTe1.875±δ(magnetic data evidenceRE3+and an antiferromagnetic transition atTN= 4 K for CeTe1.875±δandTN= 11 K for GdTe1.875±δ), whereas PrTe1.875±δand SmTe1.875±δshow no long-range order down to 2 K.
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DOI:
10.1002/zaac.201800382
发表时间:
2018
期刊:
Zeitschrift für anorganische und allgemeine Chemie
影响因子:
--
作者:
H. Poddig;T. Donath;P. Gebauer;K. Finzel;M. Kohout;P. Schmidt;Th. Doert
通讯作者:
Th. Doert
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
P. Plambeck;W. Abriel;W. Urland
通讯作者:
W. Urland
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
T. Doert;Enkhtsetseg Dashjav;B. P. T. Fokwa
通讯作者:
B. P. T. Fokwa
影响因子:
2.2
作者:
Kohout, M
通讯作者:
Kohout, M
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
T. Doert;C. Graf;P. Schmidt;I. G. Vasilieva;P. Simon;W. Carrillo‐Cabrera
通讯作者:
W. Carrillo‐Cabrera