Solvothermal syntheses and characterization of three new silver(I)/copper(I)-thioarsenates based on As²⁺/As³⁺ ions

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• 作者：Hua-Gang Yao^a ; ^b ; ^{hgyao@gdpu.edu.cn} ; Cheng-Fei Tang^a ; Yong-Lin An^c ; Zi-Jian Ou^a ; Guo-Hao Wu^a ; Pei Lan^a ; Yi-Long Zheng^a
• 关键词：Solvothermal synthesis ; Thioarsenates(II) ; Silver&ndash ; sulfur chain ; Copper&ndash ; sulfur chain ; Double layer
• 刊名：Journal of Solid State Chemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：246
• 期：Complete
• 页码：87-91
• 全文大小：676 K
• 卷排序：246

文摘

Three new silver(I)/copper(I)-thioarsenates KAgAsIIS2 (1), RbCu2AsIIIS3 (2) and RbCu4AsIIIS4 (3) have been solvothermally synthesized and structurally characterized. 1 exhibits a two-dimensional anionic network built up by As−As bond connecting the left- and right-handed helical [AgS2]4− chains, and represents the first examples of thioarsenates(II). The structure of 2 consists of two kinds of helical [Cu2S3]4– chains linked by the arsenic atoms to form double layers with rubidium ions between the layers. Compound 3 is built up of infinite [Cu2S2]2– chain and layered [Cu6As2S6] linked to form a three-dimensional anionic framework, [Cu4AsS4]–, and containing channels in which the rubidium cations reside. The optical properties of 1–3 have been investigated by UV–vis spectroscopy.