A new intercalated iron sulfide (C2H8N2)0.4Fe2S2 from solvothermal route: Synthesis, structure and tunable magnetism

被引：11
|
作者：
Wu, Dan [1 ]
Guo, Zhongnan [1 ]
Liu, Ning [2 ]
Zhou, Liang [1 ]
Mao, Yingluo [1 ]
Wan, Lin [1 ]
Sun, Fan [1 ]
Yuan, Wenxia [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Dept Chem, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Res & Dev Ctr Funct Crystals, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2018年 / 91卷
基金：
中国国家自然科学基金;
关键词：
Intercalated FeS material; Ethanediamine; Solvothermal synthesis; Paramagnetism; Absence of superconductivity; SUPERCONDUCTING PHASES; CRYSTAL-STRUCTURE; TETRAGONAL FES; SELENIDES;
D O I：
10.1016/j.inoche.2018.03.006
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In this work, a new intercalated FeS compound: (C2H8N2)(0.4)Fe2S2 was synthesized via the solvothermal route. The product is stable in air and shows the micron-sized plate shape. Structure refinement indicates that (C2H8N2)(0.4)Fe2S2 adopts the I4/m space group with the lattice constants a = 3.6906(6) and c = 20.4215(11) A. The [FeS] layer crystallizes into the anti-fluorite structure with edge-sharing tetrahedrons and the C2H8N2 molecules are inserted in between the layers. (C2H8N2)(0.4)Fe2S2 is the first intercalated FeS compound reported up to now that contains the electroneutral guest layers. This specific feature leads to the paramagnetic behavior without any magnetic transition in the measured temperature range. Furthermore, we find that the ferromagnetic interaction can also be easily induced in this compound by inserting the extra Fe in between the layers, indicating the controllable magnetism of the title compound. The absence of superconductivity in (C2H8N2)(0.4)Fe2S2 is mainly due to the external pressure on FeS layers induced by En intercalation. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：72 / 76
页数：5
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