Two new phases in the ternary RE-Ga-S systems with the unique interlinkage of GaS4 building units: synthesis, structure, and properties

Hua Lin; Jin-Ni Shen; Wei-Wei Zhu; Yi Liu; Xin-Tao Wu; Qi-Long Zhu; Li-Ming Wu

doi:10.1039/c7dt02545a

Two new phases in the ternary RE-Ga-S systems with the unique interlinkage of GaS₄ building units: synthesis, structure, and properties

Dalton Trans. 2017 Oct 17;46(40):13731-13738. doi: 10.1039/c7dt02545a.

Authors

Hua Lin¹, Jin-Ni Shen², Wei-Wei Zhu³, Yi Liu³, Xin-Tao Wu¹, Qi-Long Zhu¹, Li-Ming Wu⁴

Affiliations

¹ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liuyimse@zju.edu.cn qlzhu@fjirsm.ac.cn liming_wu@fjirsm.ac.cn.
² College of Materials Science and Engineering, Fuzhou University, Fujian 350108, People's Republic of China.
³ State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China.
⁴ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China. liuyimse@zju.edu.cn qlzhu@fjirsm.ac.cn liming_wu@fjirsm.ac.cn and Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China.

PMID: 28956567
DOI: 10.1039/c7dt02545a

Abstract

Two novel ternary rare-earth chalcogenides, Yb₆Ga₄S₁₅ and Lu₅GaS₉, have been prepared by solid-state reactions of an elemental mixture at high temperatures. Their structures were determined on the basis of single-crystal X-ray diffraction. Yb₆Ga₄S₁₅ crystallizes in the monoclinic space group C2/m (no.12) [a = 23.557(2) Å, b = 3.7664(4) Å, c = 12.466(1) Å, β = 90.915(9)°, V = 1105.9(2) Å³ and Z = 2], whereas Lu₅GaS₉ crystallizes in the triclinic space group P1[combining macron] (no.2) [a = 7.735(3) Å, b = 10.033(4) Å, c = 10.120(4) Å, α = 106.296(4)°, β = 100.178(5)°, γ = 101.946(3)°, V = 714.1(5) Å³ and Z = 2]. Both the structures feature complicated three dimensional frameworks with the unique interlinkages of GaS₄ as basic building units. Significantly, photo-electrochemical measurements indicated that title compounds were photoresponsive under visible-light illumination. Furthermore, the UV-visible-near IR diffuse reflectance spectra, thermal stabilities, electronic structures, physical properties as well as a structure change trend of the ternary rare-earth/gallium/sulfur compounds have been evaluated.