在协调子内,对双核复合物的非共价捕获和稳定
Shinnosuke Horiuchi1, Takashi Murase, Makoto Fujita
1Department of Applied Chemistry, School of Engineering, The University of Tokyo, and CREST, Japan Science and Technology Agency, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Journal of the American Chemical Society
|July 26, 2011
概括
一个双核复合体被封装在一个协调子里. 这种超分子结构抑制了异体化和连接体交换,稳定了特定的cis配置.
科学领域:
- 超分子化学 超分子化学
- 有机金属化学 有机金属化学
- 协调化学 协调化学
背景情况:
- 双核鲁丁复合体表现出动态行为,包括 cis-trans 异体化和连接物交换.
- 自组装的协调提供了对宿主-客人化学反应的封闭环境.
- 控制超分子宿主内部的分子动力学是一个关键的挑战.
研究的目的:
- 为了研究协调子对双核复合体动态行为的影响.
- 探索超分子封装的潜力,以稳定特定的分子配置.
- 分析将[η(5) - 烯 (Ru) (CO) (2) ]2封闭在协调中的结构和动态后果.
主要方法:
- 一个双核复合物的合成, [η(5) - 印尼尔 (Ru) (CO) (2) ] (2).
- 一个自组装协调的建造.
- 复合体在子内的非共价封闭.
- 进行X射线晶体分析以确定分子结构和配置.
主要成果:
- 双核复合物成功地被封装在协调子中.
- 复合物的快速 cis-trans 异体化在子内被抑制.
- 终端和桥梁碳基之间的干交换被抑制.
- 只有碳桥复合物的cis配置被观察并通过X射线结晶学证实.
结论:
- 在协调内的超分子封装有效地限制了双核复合体的动态过程.
- 封闭的环境稳定了特定的cis配置,防止异构化和连接体交换.
- 这项研究证明了协调作为控制分子动态和稳定特定异构体的工具的实用性.
相关概念视频
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