二基替代 [MnIII(3,5-diHal-sal2323) ]BPh4盐:如此相似但如此不同
D V Korchagin1, G V Shilov1, M V Zhidkov1
1Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, FRC PCP MC RAS, 1 ac. Semenov av., Chernogolovka, 142432, Russian Federation. korden@icp.ac.ru.
Dalton transactions (Cambridge, England : 2003)
|March 12, 2026
概括
合成和研究了三种新的 (III) 复合物与希夫基联体. 一个复合体显示不完整的旋转过渡,另一个保持高旋转,第三个显示与相位过渡相关的旋转交叉.
科学领域:
- 协调化学 协调化学
- 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:
- 与希夫基联结体的 ((III) 复合物被研究了它们的磁性.
- 调联体替代剂可以影响金属复合体中的旋转过渡行为.
研究的目的:
- 合成和描述Mn (III) 复合物的新型四甲基盐.
- 研究这些复合物的结构性,磁性和旋转过渡性质.
- 建立磁体结构的相关性.
主要方法:
- 三种新型Mn(III) 复合体与3,5-diHal-sal2323 Schiff基联体的合成.
- 使用X射线晶体学进行结构性表征.
- 在温度范围内 (2-300 K) 测量磁感应度.
主要成果:
- 复合物1 ([Mn(3,5-Br,F-sal2323)]BPh4) 在169K左右呈现逐渐的,不完全的旋转转变.
- 复合物2 ([Mn(3,5-diI-sal2323)]BPh4) 在研究的温度下保持在高旋转状态.
- 复合体3 ([Mn(3,5-Cl,Br-sal2323)]BPh4) 经历了结构阶段转换,并在133 K时展现了旋转交叉.
结论:
- 这项研究强调了基替代剂对Mn (III) 复合物的旋转过渡行为的影响.
- 对合成的复合物建立了磁结构相关性.
- 综合体3呈现了一个与结构阶段过渡相关的旋转交叉的独特案例.
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