灵活的六链排序在单核旋转交叉铁 (III) 复合体中的影响
Hiroaki Hagiwara1, Kento Sonoda1
1Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan. hagiwara.hiroaki.r3@f.gifu-u.ac.jp.
Dalton transactions (Cambridge, England : 2003)
|March 13, 2024
概括
这项研究报告了一种新的铁III复合体,表现出独特的两步旋转交叉 (SCO) 过渡. 连接体中的柔性基链会影响异常的磁切换特性.
科学领域:
- 无机化学 无机化学
- 材料科学 材料科学 材料科学
- 磁电化学 磁电化学 磁电化学
背景情况:
- 旋转交叉 (SCO) 复合体是对外部刺激敏感的分子开关.
- 调整连接体结构对于控制SCO特性至关重要.
- 了解上合组织材料中的结构性质关系是开发先进功能材料的关键.
研究的目的:
- 合成和表征一种新型的铁 (III) 复合物,其中含有具有n-基链的三酸N2O配体.
- 为了研究合成复合物的磁性和旋转交叉行为.
- 阐明控制观察到的旋转交叉过渡的结构因素.
主要方法:
- 合成Fe (III) 复合物[Fe (Hex-tnal) ]BPh4 (1) 的合成.
- 取决于温度的磁感应度测量.
- 不同扫描热量计 (DSC).差异扫描热量计.
- 可变温度的单晶X射线衍射.
主要成果:
- 综合体1显示了10K和400K之间的两步旋转交叉过渡.
- 在室温 (300345 K) 以上,观察到一种异常的渐进磁感应变化.
- 在狭窄的温度范围 (345357 K) 中发生了歇斯底里性的磁感应性跳跃.
- 结构分析揭示了结合的秩序-乱过渡,六链形状变化和对称性变化 (三临床单临床三临床).
结论:
- 基替代物的灵活运动显著影响了旋转交叉行为.
- 分子间相互作用和N4O2协调环境与两步SCO过渡相结合.
- 这项工作展示了一种通过连接体设计实现异常磁切换特性的策略.
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