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ChemInform Abstract: New Quaternary Sulfides in the AE-RE-Sn-S System (AE = Alkaline-Earth, RE = Rare Earth).

✍ Scribed by Hui-Yi Zeng; Zhong-Yan Zhao; Sheng-Ping Guo; Fa-Kun Zheng; Guo-Cong Guo; Jin-Shun Huang

Publisher: John Wiley and Sons
Year: 2012
Weight: 23 KB
Volume: 43
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201211011

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✦ Synopsis

The new compounds Sr2Y2.67Sn3S12, Ca3La2Sn3S12, and Ca3Er2Sn3s12 are prepared from appropriate mixtures of CaS, SrS, La2S3, Er2S3, SnS2, Sn, S, La, or Y using KBr as fluxing agent (silica ampules, 950-1000 °C, 100-316 h). The new quaternary phases are characterized by single crystal XRD and UV/VIS diffuse reflectance spectroscopy. They crystallize isostructurally in the hexagonal space group P62m with Z = 1 (Eu5Zr3S12-type structure). The structure of Sr2Y2.67Sn3S12 contains ∞ 1 [Y3S(1)12/2S(2)3S(3)3] chains, which are connected into a three-dimensional framework by Sn atoms, with Sr atoms filling the channels. Ca3La2Sn3S12 has an optical band gap of 1.

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ChemInform Abstract: High-Pressure High-Temperature Synthesis and Crystal Structure of the Isotypic Rare Earth (RE)—Thioborate—Sulfides RE9[BS3]2 [BS4]3S3, (RE: Dy—Lu).

✍ Marija Borna; Jens Hunger; Alim Ormeci; Dirk Zahn; Ulrich Burkhardt; Wilder Carr 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views

## Abstract The title compounds are prepared by high temperature/high pressure reactions of mixtures of the elements in the molar ratio RE:B:S = 1:3:6 (3.5 GPa, 1673 K, 5 h).