通过核心@外晶体将联体转化为协调聚合物:多步相依结构转化
Bahare Ebrahimi1, Behrouz Notash1, Toka Matar2
1Department of Inorganic Chemistry, Shahid Beheshti University, 1983969411 Tehran, Iran.
Inorganic chemistry
|December 29, 2023
概括
两种新的协调聚合物通过固体-气相转化转化为水协调化合物. 它们还经历了独特的固体-液体相转换,通过核心-外通路将连接物直接转化为协调聚合物.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
背景情况:
- 协调聚合物 (CP) 是具有可调节结构和特性的多功能材料.
- 在CP的伪多重态性涉及到晶格内的客分子的变化.
- 单晶到单晶 (SCSC) 转换对于开发响应性材料至关重要.
研究的目的:
- 通过使用特定的四素连接体合成和表征新型1D协调聚合物.
- 在不同的环境条件下 (固体-气体和固体-液体相) 调查这些CP的结构变化.
- 探索在SCSC转换过程中聚合物转化成联体协调的机制.
主要方法:
- 使用3,6-bis-pyridin-3-yl) -1,2,4,5-tetrazine (3,3'-pytz) 和甲,合成1D协调聚合物[Cd(3,3'-pytz) ((CH3OH) 2 ((ClO4) 2)) (1) 和[Cd(3,3'-pytz) ((CH3CN) 2 ((ClO4) 2)) (2).
- 将化合物1和2暴露在水蒸气中以诱导固体-气相转换.
- 浸泡化合物1,2,和水添加物[Cd(3,3'-pytz) ((H2O) 2 ((ClO4) 2) (3) 在脱离离子水中进行固体-液体相转化.
- 单晶X射线衍射用于分析转换过程中的结构变化.
主要成果:
- 化合物1和2经历一阶段的固体气体转化,在暴露于水蒸气时形成化合物3.
- 化合物1,2和3在脱离离子水中表现出独特的三步SCSC转化,涉及联体中间体的形成.
- 在固体-液体相转换过程中观察到一条用于直接连接物-协调聚合物转换的新型核心外途径,产生化合物4.
结论:
- 这项研究证明了1D协调聚合物的动态结构行为.
- 观察到的SCSC转换突显了设计响应材料的潜力.
- 通过核心外机制直接将连接体转化为协调聚合物,在理解固态反应方面取得了重大进展.
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