铁中的热和光诱导的旋转交叉 (III) 复合物与基基盐联体:歇斯底里,两步过渡和LIESST效应
Lukáš Pogány1, Kamil Kotrle2, Ivan Nemec2
1Department of InorganicChemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia.
Inorganic chemistry
|December 29, 2025
概括
与希夫基联体的新铁 (III) 复合物表现出可调节的旋转交叉 (SCO) 特性. 体灵活性,溶解和晶体包装显著影响SCO行为,使分子切换的潜在应用成为可能.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 希夫基联体在协调金属离子方面具有多样性.
- 铁复合体中的旋转交叉 (SCO) 现象对于分子开关至关重要.
- 了解影响SCO的因素是设计功能材料的关键.
研究的目的:
- 合成和描述新的铁 (III) 协调化合物与类似盐的连接物.
- 研究这些复合体的旋转交叉 (SCO) 行为.
- 分析分子间相互作用和SCO特性上的溶解的作用.
主要方法:
- 希夫基联体合成的凝结反应.
- 使用X射线衍射和光谱学 (EPR) 进行结构性表征.
- 磁性测量用于监测旋转交叉 (SCO).
- 希尔什菲尔德表面分析和分子间相互作用的QT-AIM计算.
- 电子结构的初始计算.
主要成果:
- 合成和表征了四种新的铁 (III) 复合物与六酸希夫基联体.
- 所有的酸盐化合物都表现出室温以上的SCO.
- 发现SCO行为主要受到晶体包装效应和溶解的控制.
- 复合物C1和C2的溶解导致了具有hysteresis和LIESST活动的尖SCO.
- 溶解后的C2表现出一个两步的SCO过渡.
结论:
- 连接物灵活性,溶解和分子间相互作用是这些铁 (III) 复合体中SCO的关键决定因素.
- 溶剂去除可以显著调整SCO属性,导致急剧的过渡和歇斯底里.
- 这些铁 (III) 复合物显示出分子切换应用的前景,因为它们具有可调的SCO行为.
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