硫酸染料的氨和盐形式中的同结构性行为
Alan R Kennedy1, Jennifer B A Kirkhouse1, Karen M McCarney1
1Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, G1 1XQ, United Kingdom.
Acta crystallographica. Section C, Structural chemistry
|February 15, 2024
概括
三种单硫酸染料的三种盐形式与或盐具有同结构性行为. 这种结构相似之处突出了酸盐的存在.
科学领域:
- 晶体学和材料科学 材料科学
- 协调化学 协调化学
- 染料化学 染料化学
背景情况:
- 单硫酸染料是多功能有机化合物,在各种工业中具有应用.
- 了解它们的盐形式的晶体结构对于预测和控制它们的特性至关重要.
- 不同结构的行为,不同化合物共享类似的晶体结构,对于材料设计很重要.
研究的目的:
- 呈现五种单硫色素的氨盐形式的晶体结构.
- 为了比较这些盐的包装与已知的和盐结构,以评估同结构性.
- 为了研究异构结构性对阴离子-离子相互作用变化的耐受性.
主要方法:
- 单晶X射线衍射被用来确定五种氨和四种盐形式的单硫色素的结构.
- 进行了结晶学数据 (单元细胞参数,对称性和包装安排) 的比较分析.
- 为了进一步比较,使用了,和银盐形式的文献数据.
主要成果:
- 所有五种盐形式都表现出具有交替的疏水性和疏水性区域的分层结构.
- 发现五种氨盐中有三种与已知的 (两种情况) 或 (一种情况) 盐形式具有同结构.
- 没有发现任何盐形式与任何等价物具有同结构性,尽管在特定情况下观察到离子包装的相似性.
结论:
- 这些亚染料盐的同结构性容忍了阴离子-辅构体相互作用的变化.
- 氨基离子可以表现出与较大的金属离子,如和等同结构的行为.
- 疏水层内的阴离子包装可以在不同的阴离子类型甚至不同的染料物种中显示相似性.
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