Chen Yuqi, Luo Han, Yin Zeqiao, Dong Xuehua, Gao Daojiang, Zhou Yuqiao, Huang Ling, Cao Liling, Zou Guohong
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China.
College of Chemistry, Sichuan University, Chengdu 610065, P. R. China.
Inorg Chem. 2024 Aug 12;63(32):15206-15214. doi: 10.1021/acs.inorgchem.4c02801. Epub 2024 Jul 31.
In this work, two tin(II)-based sulfates, SnOSO and SnO(OH)(HSO), were synthesized via the mild hydrothermal method. Both compounds employ the Sn cation with stereochemically active lone pair (SCALP) electrons and non-π-conjugated tetrahedral anionic groups SO as the functional structural blocks. Interestingly, the experimental birefringence of SnO(OH)(HSO) is 0.169@546 nm, approximately 42 times larger than that of SnOSO, which is 0.004@546 nm. Detailed structural analysis and theoretical calculations suggest that this significant birefringence difference arises from the optimization of functional building blocks in coordination environments and spatial arrangements. Furthermore, both compounds exhibit ultraviolet absorption edges at 308 and 307 nm, respectively. This indicates that SnO(OH)(HSO) has the potential to be a candidate for an ultraviolet (UV) birefringent crystal. This study offers inspiration for further exploration of tin(II)-based compounds with excellent comprehensive properties.
在本工作中，通过温和水热法合成了两种基于锡（II）的硫酸盐SnOSO和SnO(OH)(HSO)。两种化合物均采用具有立体化学活性孤对（SCALP）电子的Sn阳离子和非π共轭四面体阴离子基团SO作为功能结构单元。有趣的是，SnO(OH)(HSO)在546 nm处的实验双折射为0.169，约为SnOSO（在546 nm处为0.004）的42倍。详细的结构分析和理论计算表明，这种显著的双折射差异源于功能结构单元在配位环境和空间排列中的优化。此外，两种化合物分别在308和307 nm处表现出紫外吸收边。这表明SnO(OH)(HSO)有潜力成为紫外（UV）双折射晶体的候选材料。本研究为进一步探索具有优异综合性能的基于锡（II）的化合物提供了灵感。
