[Ru(bpy) 2(dmso) 2]2+的光结晶学揭示了一个O-结合的转移稳定状态
Zoe Y Marr1, Rajani Thapa Magar2, Bertrand Fournier3,4
1Department of Chemistry, The State University of New York at Buffalo Buffalo NY 14260 USA jbb6@buffalo.edu.
Chemical science
|July 7, 2023
概括
这项研究详细介绍了在固态复合体中对二甲基硫氧化物 (dmso) 配体的光触发异构的首次观察. 这种光异构化会导致晶格内部可见的颜色变化和结构变化.
科学领域:
- 固态化学 固态化学
- 摄影化学的使用.
- 协调化学 协调化学
背景情况:
- 二甲基硫氧化物 (dmso) 是协调化学中常见的联结体.
- 光异构化是光化学中的一个关键过程,通常在溶液中进行研究.
- 与溶液相化学相比,固态反应提供了独特的路径和特性.
研究的目的:
- 为了研究dmso配体在晶体固体状态内的 bis硫氧化物复合体中的光触发性异构化.
- 描述与这种固态光异构化相关的结构和光谱变化.
- 为了比较固态异体化与已知的溶液相行为.
主要方法:
- 单晶X射线衍射 (XRD) 用于结构分析.
- 紫外线可见光谱仪用于监测光谱变化.
- 数字成像用于记录视觉颜色变化.
- 在现场和现场辐射实验.
主要成果:
- 在[Ru(bpy) 2 ((dmso) 2) 晶体中观察到dmso配体的光触发异构化.
- 固态紫外线光谱在辐射后的550nm左右显示光学密度增加.
- 晶体呈现出颜色从淡色到红色的变化,并沿着特定的平面分裂.
- XRD证实了网格范围内的异构,产生混合的S,S和O,O/S,O异构结构.
- 在现场XRD检测显示,在405nm光照时间内,O结合异构体百分比增加.
结论:
- 这项研究提供了第一个证据,证明了光触发的dmso连接物异构化在固态 bis-sulfoxide复合体中.
- 固态光异构化导致可观测的宏观变化,包括颜色和晶体形态.
- 这些发现表明,利用光来控制固态分子结构的潜力.
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