Na2SnSO4F2: an ultraviolet-transparent sulfate crystal with large birefringence driven by stereochemically active tin(II)

Jia Wang; Wenbin Zhang; Xiangcong Ma; Fangfang Zhang; Hong Du; Shujuan Han

doi:10.1039/D5DT02815A

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Na₂SnSO₄F₂: an ultraviolet-transparent sulfate crystal with large birefringence driven by stereochemically active tin(ii)

Jia Wang,^a Wenbin Zhang,^bc Xiangcong Ma,^bc Fangfang Zhang,

^bc Hong Du

*^ad and Shujuan Han

*^bc

Author affiliations

* Corresponding authors

^a College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi 830054, P. R. China
E-mail: 175790509@qq.com

^b Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
E-mail: hansj@ms.xjb.ac.cn

^c Research Center for Crystal Materials; CAS Key Laboratory of Functional Materials and Devices for Special Environmental Conditions; Xinjiang Key Laboratory of Functional Crystal Materials; Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Road, Urumqi 830011, P.R. China

^d Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, Urumqi 830054, P.R. China

Abstract

A new mixed-alkali tin sulfate fluoride birefringent crystal, Na₂SnSO₄F₂, was successfully synthesized and grown. It exhibits a large birefringence of 0.086 at 1064 nm and maintains a large bandgap. Theoretical calculations indicate that the relatively well-aligned [SnOF₂] polyhedra are the primary contributor to the large birefringence.

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Article information

DOI: https://doi.org/10.1039/D5DT02815A
Article type: Communication
Submitted: 25 Nov 2025
Accepted: 22 Dec 2025
First published: 05 Jan 2026

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Dalton Trans., 2026, Advance Article

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Na₂SnSO₄F₂: an ultraviolet-transparent sulfate crystal with large birefringence driven by stereochemically active tin(II)

J. Wang, W. Zhang, X. Ma, F. Zhang, H. Du and S. Han, Dalton Trans., 2026, Advance Article , DOI: 10.1039/D5DT02815A

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