Facile Hydrazine-Hydrothermal Syntheses and Characterizations of Two Quaternary Thioarsenates(III): Two-Dimensional SrAg4As2S62 H2O and One-Dimensional BaAgAsS3

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• 作者：Dr. Dongming Yan ; Chang Liu ; Prof. Dr. Wenxiang Chai ; Xuerong Zheng ; Luodong Zhang ; Dr. Mingjia Zhi ; Dr. Chunmei Zhou ; Prof. Dr. Qichun Zhang and Prof. Dr. Yi Liu
• 刊名：Chemistry – An Asian Journal
• 出版年：2016
• 出版时间：June 21, 2016
• 年：2016
• 卷：11
• 期：12
• 页码：1842-1848
• 全文大小：1614K
• ISSN：1861-471X

文摘

Two new quaternary thioarsenates(III), SrAg₄As₂S₆⋅2 H₂O (1) and BaAgAsS₃ (2), have been prepared through a hydrazine-hydrothermal method at low temperature. Compound 1 possesses a two-dimensional (2D) layer network, while compound 2 features a one-dimensional (1D) column structure. The detailed structure analysis indicates that Sr²⁺ and Ba²⁺ cations have different directing effects on the structures of thioarsenates(III). Both experimental and theoretical studies demonstrate that compounds 1 and 2 are narrow-gap semiconductors. Our success in synthesizing these two quaternary thioarsenates(III) proves that the hydrazine-hydrothermal technique is a powerful yet facile synthetic method for exploring new complex chalcogenides with diverse crystal structures and interesting physical properties.