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Synthesis, crystal structures and physical properties of A(x)(H2O)(y)MoS2(A = K, Rb, Cs)
Mao, Yuanlv; Fang, Yuqiang; Pan, Jie; Wang, Dong; Bu, Kejun; Che, Xiangli; Zhao, Wei; Huang, Fuqiang
2019-11-01
Source PublicationJOURNAL OF SOLID STATE CHEMISTRY
ISSN0022-4596
Volume279
SubtypeArticle
AbstractRecently, metastable polymorphs of MoS2 (1T, 1T', 1T''') have raised much attention due to their rich crystal structures and intriguing physicochemical properties. They are often derived from alkali metal intercalated compounds of MoS2, A(x)(H2O)(y)MoS2 (A = alkali metal), by topotactic reaction. In order to make clear the deintercalation process, it is demanded to elucidate the compositions and crystal structures of A(x)(H2O)(y)MoS2. Here, we report the synthesis of high-quality A(x)(H2O)(y)MoS2 (A = K, Rb, Cs) single crystals, determine their crystal structures and investigate the physical properties. The three new quasi two-dimensional compounds crystallize in the identical monoclinic P2(1)/m (No.11) space group determined by single crystal X-ray diffraction. Their structures consist of ordered MoS2 layers, which are intercalated by disordered hydrated A' cations. Each layer contains edge-sharing [MoS6] octahedral, forming one-dimensional Mo zigzag chains along the b-axis. The resistivity of A(x)(H2O)(y)MoS2 increases with the decrease of temperature, which is the typical semiconducting behavior. The apparent difference in the resistivity of the three compounds is mainly related to the number of electrons injected by alkali metal atoms. Magnetic measurements indicated that the three compounds are dominantly paramagnetic accompanied by weak ferromagnetic contributions.
KeywordQuasi two-dimensional structure New compounds Physical properties
DOI10.1016/j.jssc.2019.120937
Language英语
WOS Research AreaChemistry
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26735
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Mao, Yuanlv,Fang, Yuqiang,Pan, Jie,et al. Synthesis, crystal structures and physical properties of A(x)(H2O)(y)MoS2(A = K, Rb, Cs)[J]. JOURNAL OF SOLID STATE CHEMISTRY,2019,279.
APA Mao, Yuanlv.,Fang, Yuqiang.,Pan, Jie.,Wang, Dong.,Bu, Kejun.,...&Huang, Fuqiang.(2019).Synthesis, crystal structures and physical properties of A(x)(H2O)(y)MoS2(A = K, Rb, Cs).JOURNAL OF SOLID STATE CHEMISTRY,279.
MLA Mao, Yuanlv,et al."Synthesis, crystal structures and physical properties of A(x)(H2O)(y)MoS2(A = K, Rb, Cs)".JOURNAL OF SOLID STATE CHEMISTRY 279(2019).
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