一个具有两个独立的Fe(II) 可切换中心和一个[Fe(anilate) 3]3-客体的超分子合体
Leoní A Barrios1,2, Simon J Teat3, Olivier Roubeau4,5
1Departament de Química Inorgànica i Orgànica, Secció Química Inorgànica, Universitat de Barcelona, Barcelona, Spain.
Chemical communications (Cambridge, England)
|August 14, 2023
概括
一个由双间 bis-pyrazolylpyridine 连接体和铁离子组成的新型螺旋协调,封装了一个铁 (III) 复合体. 这种主机-客户互动会在铁 (II) 中心引发明显的旋转交叉行为,可以通过晶体学观察到.
科学领域:
- 协调化学 协调化学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 协调为封装客分子提供了独特的环境.
- 铁 (II) 复合体中的旋转交叉 (SCO) 是一个由分子环境影响的敏感现象.
- 设计具有可控制客人互动的子是先进材料的关键.
研究的目的:
- 使用双间 bis-pyrazolylpyridine 连接体和铁离子合成一个二金属螺旋协调.
- 为了研究铁(III) 三化酸复合物在子内的封装.
- 为了研究主机-客户互动对铁 (II) 中心的旋转交叉行为的影响.
主要方法:
- 合成一个双间隔 bis-pyrazolylpyridine 接体.
- 具有Fe (II) 离子的二金属螺旋协调的自组装.
- 封装一个Fe(III) 三-亚尼酸复合物.
- 单晶X射线衍射分析以确定结构和对称性.
- 可变温度磁感应度测量用于探针旋转交叉.
主要成果:
- 形成一个双金属螺旋协调,封装一个Fe (III) 复合体.
- 展示了宿主与客人的相互作用,打破了Fe (II) 中心的对称性.
- 在两个Fe(II) 中心观察差异旋转交叉行为.
- 子及其客人的详细晶体学特征.
结论:
- 合成的协调子有效地封装了客分子.
- 子内的宿主-客户互动可以精确调整金属中心的旋转交叉特性.
- 该系统为开发具有可控制自旋状态的可切换分子材料提供了一个平台.
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