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化物桥梁的Fe/Co立方体与烯酸功能化Fe/Co立方体

Qi Liu¹, Yue Cheng¹, Shihao Liu¹

¹Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China. chenzy@sustech.edu.cn.

Dalton transactions (Cambridge, England : 2003)

|August 29, 2023

概括

合成了两种新型的化物桥梁铁 [Fe4Co4] 立方体复合体. 这些复合体形成明显的超分子链,在200K附近表现出不完整的旋转交叉过渡.

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:

化物桥接金属复合物通过金属离子和连接体的变化提供可调节的特性.
人类基因功能化可以影响分子间相互作用和固态组装.
铁复合体中的旋转交叉 (SCO) 现象对分子开关和传感器有兴趣.

研究的目的:

为了合成和描述新型的化物桥梁 [Fe4Co4] 立方体复合体.
研究这些复合物的超分子组合和磁性特性.
探索合成化合物的发光行为和潜在应用.

主要方法:

合成和单晶X射线衍射用于[Fe4Co4]立方体的结构阐明.
磁感应度测量以研究旋转交叉过渡.
发光光谱学用于评估光物理性质和聚合效应.

主要成果:

两个复合物[pzTp) Fe ((CN) 3Co ((TpEtOAn) ]4[OTf]4·8MeCN·7Et2O (1) 和[NEt4]3[pzTp) Fe ((CN) 3Co ((TpEtOAn) ]4[OTf]7·5MeCN·2Et2O (2) 已经成功合成.
综合体1通过烯酸-烯酸 π-π 堆叠形成线性超分子链,而综合体2则呈现着一维齐格扎格的组合.
这两种化合物都显示了不完整的SCO从偏磁{FeIIILS(μ-CN) COIIHS}向二磁{FeIILS(μ-CN) COIIILS}状态的过渡,大约在200K左右.
综合体1显示在稀释或添加 perfluoronaphthalene 时增强的发光,表明抑制聚合引起的火 (ACQ).

结论:

乙烯基基组促进了固态中独特的超分子结构的形成.
[Fe4Co4]立方体表现出温度依赖的旋转交叉行为.
发光特性表明,在聚合控制很重要的应用中,可能与ACQ效应有关.

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