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论文类型：期刊论文

发表时间：2017-02-01

发表刊物：JOURNAL OF SOLID STATE CHEMISTRY

收录刊物：SCIE、EI

卷号：246

页面范围：87-91

ISSN号：0022-4596

关键字：Solvothermal synthesis; Thioarsenates(II); Silver-sulfur chain; Copper-sulfur chain; Double layer

摘要：Three new silver(I)/copper(I)-thioarsenates (KAgAsS2)-S-II (1), (RbCu2AsS3)-S-III (2) and (RbCu4AsS4)-S-III (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.