在一个基于不对称地替代的大平面离子体的中性铁 (II) 复合体中的旋转顺序障碍和旋转交叉行为
Maksym Seredyuk1,2,3, Kateryna Znovjyak1, Francisco Javier Valverde-Muñoz2
1Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine. maksym.seredyuk@knu.ua.
这项研究引入了一种新的旋转交叉 (SCO) 铁 (II) 复合体,具有独特的连接体. 它表现出歇斯底里SCO过渡和光诱导的自旋状态捕获,由合的分子和晶格动力学驱动.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 分子开关 分子开关
背景情况:
- 旋转交叉 (SCO) 铁 (II) 复合体是关键的可切换分子材料.
- 了解上合组织机制对于开发先进的功能材料至关重要.
研究的目的:
- 合成和描述一种新型的SCO Fe (II) 复合物与一种新的不对称联结体.
- 调查上海合作组织的过渡机制,包括热和光引起的影响.
- 分析分子结构,格子动力学和SCO合作性之间的相互作用.
主要方法:
- 合成和特征的[Fe(II) ((ppt-2Fph) ]0·2MeOH复合体.
- 可变温度磁感应度测量以研究SCO过渡.
- 单晶X射线衍射在不同的自旋状态.
- 使用B3LYP/6-31G (d,p) 进行结构能源框架分析的计算分析.
主要成果:
- 该综合体表现出一种歇斯底里的SCO过渡 (285K冷却,293K加热).
- 观测到的光诱发激发自旋状态捕获 (LIESST) 与T ((LIESST) = 73K.
- 单晶分析揭示了与SCO结合的基组的可逆秩序障碍.
- 结构能源框架分析表明稳定和不稳定格子能量变化.
结论:
- 这种新的Fe(II) 复合体通过热和光刺激表现出可切换性质.
- 合作性上海合作组织过渡受到分子间相互作用和旋转障碍的影响.
- 这些发现提供了对具有可调SCO行为的分子材料设计的见解.
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