[RbSr3X][(BS3)2] (X = Cl, Br): two salt-inclusion thioborates with large birefringence and structure transformation from centrosymmetric to asymmetric

Yihan Yun; Xueling Hou; Zhihua Yang; Guangmao Li; Shilie Pan

doi:10.1039/d3cc05205b

[RbSr₃X][(BS₃)₂] (X = Cl, Br): two salt-inclusion thioborates with large birefringence and structure transformation from centrosymmetric to asymmetric

Chem Commun (Camb). 2023 Dec 19;60(1):118-121. doi: 10.1039/d3cc05205b.

Authors

Yihan Yun^{1

2}, Xueling Hou^{1

2}, Zhihua Yang^{1

2}, Guangmao Li^{1

2}, Shilie Pan^{1

2}

Affiliations

¹ Research Center for Crystal Materials, CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, CAS, 40-1 South Beijing Road, Urumqi 830011, China. slpan@ms.xjb.ac.cn.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 38037841
DOI: 10.1039/d3cc05205b

Abstract

[RbSr₃X][(BS₃)₂] (X = Cl, Br), two salt-inclusion chalcogenides with planar [BS₃] as anionic units, were obtained. Structure analysis indicates that the size effect of halogens may adjust the arrangement between the [BS₃] units and further lead to the CS-to-NCS structure transformation. Experimental characterizations reveal that they have wide bandgaps (3.64-3.70 eV), large birefringence (0.136-0.144) and high LIDT (12-14 × AgGaS₂). This work indicates that the thioborate family is a rich source to explore structure chemistry and promising infrared functional materials.