通过远程库伦比克和CH··O相互作用稳定库库尔比/客组合
Roymon Joseph1, Anna Nkrumah, Ronald J Clark
1Department of Chemistry and Biochemistry, Ohio University , Athens, Ohio 45701, United States.
Journal of the American Chemical Society
|April 18, 2014
概括
黄瓜比特[n]urils (CB[n]) 通过CH···O键强烈结合金属二烯复合物,由有利的度驱动. CB[8]作为一个链接器,使自我排序和形成动态的,交替的金属寡合体.
科学领域:
- 超分子化学 超分子化学
- 协调化学 协调化学
- 主机和客人的化学反应
背景情况:
- 黄瓜[n]urils (CB[n]) 是宏环宿主,以强烈的客结合而闻名.
- 金属-特皮里丁复合体是超分子化学中的多功能构建块.
- 了解非共价相互作用对于设计复杂的分子组件至关重要.
研究的目的:
- 为了研究库库尔比特[n]urils (CB[n]) 和金属结合的特皮里丁连接体之间的非共价相互作用.
- 探索CB[n]作为一个链接器在形成动态超分子组件中的作用.
- 为了证明金属超分子寡合体结构中的自我排序现象.
主要方法:
- 合成和描述铁 (II) 和 (III) 特皮里丁复合物与不同的4'-替代物.
- 使用cucurbit[n]urils (CB[6]-CB[8]) 来量化宿主-客人相互作用的结合性研究.
- 谱学和结构分析以阐明结合模式和组件形成.
主要成果:
- 强烈的CH···O结相互作用被观察到CB[n]和金属特皮里丁复合体之间.
- 结合是由高度有利的和不利的的组合驱动的.
- CB[8]有效地链接金属胺复合物,通过替代物的自我排序形成动态的寡合物.
结论:
- 黄瓜[n]urils可以通过有机连接体与金属二化合物进行前所未有的相互作用.
- CB[8]作为一个多功能"软"链接器,使得能够构建明确的,交替的金属-超分子寡合体.
- 观察到的自我排序行为为复杂的超分子架构的受控组装提供了一条途径.
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