Gd3N@C80的结构:晶体结构,热异构和计算研究
Olesya Semivrazhskaya1, Adrian Romero-Rivera2, Safwan Aroua1
1Laboratorium für Organische Chemie, ETH Zürich , Vladimir-Prelog-Weg 3 , CH8093 Zürich , Switzerland.
Journal of the American Chemical Society
|July 4, 2019
概括
这项研究使用先进技术阐明了两种加多化富勒烯衍生物 (Gd3N@Ih-C80) 的结构. 这些发现揭示了这些内分体富勒烯的新结构和异构化途径.
科学领域:
- 超分子化学
- 纳米技术
- 材料科学
背景情况:
- 由于其独特的电子和磁性特性,化集群 (Gd3N@C80) 封装在烯中具有显著的兴趣.
- 这些富勒因的区域选择性功能化允许在各种领域合成具有潜在应用力的新衍生物.
研究的目的:
- 通过1,3-双极循环添加合成的Gd3N@Ih-C80的两个双乙烯胺添加物的精确结构.
- 调查这些引物中的内体Gd3N集群的结构特征.
- 探索热异构化过程并确定富勒烯上的潜在添加点.
主要方法:
- 单晶X射线衍射以确定的三维结构.
- 可见近红外 (VIS-NIR) 光谱用于电子结构分析.
- 对热异构的研究,以了解结构转变.
- 理论计算,包括密度函数理论 (DFT),以支持实验发现和阐明机制.
主要成果:
- 确定了一种小Gd3N@Ih-C80双的晶体结构,具有具有[6,6][6,6]加位位的C2对称和一个平的Gd3N集群.
- 这标志着Gd3N@Ih-C80衍生物的第一个报告的晶体结构.
- 主要bis-adduct的结构是从NIR光谱推断出来的,与已知的Y3N@Ih-C80 adduct结构相关.
- 实验证据显示,小二添加物与主要添加物异体化,DFT计算支持第二个添加点.
结论:
- 这项研究成功确定了两种Gd3N@Ih-C80双添加物的结构,为它们的结构多样性提供了关键的见解.
- 这些发现突显了富勒功能化中的区域选择性控制能力和内体富勒衍生物的动态性.
- 这项工作为进一步研究功能化内分体富勒烯的合成,表征和应用奠定了基础.
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