的合成,结构和磁性特性 (二) 复合物与含有两个二烯悬挂臂的二烯基基基的宏环联体
Eva Zahradníková1, Céline Pichon2, Carine Duhayon2
1Department of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc 17. listopadu 12 CZ-771 46 Olomouc Czech Republic bohuslav.drahos@upol.cz +420 585 634 954 +420 585 634 429.
RSC advances
|September 4, 2024
概括
研究人员使用基于的宏循环连接体调整了 (II) 复合体中的磁性异构性. 复合体4b表现出场诱导的单分子磁体行为,为磁性材料提供了洞察力.
科学领域:
- 协调化学 协调化学
- 磁电化学 磁电化学 磁电化学
- 材料科学 材料科学 材料科学
背景情况:
- 调整磁性异构性对于开发先进的磁性材料至关重要.
- (II) 复合物与宏环联体是分子磁性的有希望的候选者.
研究的目的:
- 合成和表征新型 (II) 复合物与以化为基础的N3O2宏环联体.
- 为了研究辅助配体 (X = Br-, I-, NCO-, NCS-, N3-) 对磁性异性质的影响.
- 探索磁性特性,包括单分子磁铁 (SMM) 的行为.
主要方法:
- 合成 (II) 复合物与以17个成员为基础的化物为基础的宏循环连接体.
- 使用X射线晶体学进行结构性表征.
- 测量磁感应度的测量.
- 使用CASSCF (完全活性空间自相一致场) 进行理论计算.
主要成果:
- 一系列[Co(L) X]+和[Co(L) ((NCS) 2]复合体已成功准备和表征.
- 所有的复合体都表现出扭曲的八面体到三角形镜几何体.
- 实质性的磁性异质性得到了正轴零场分裂参数 (D) 的证实.
- 复杂4b证明了场诱导的单分子磁铁 (SMM) 行为.
结论:
- 该研究通过连接体设计成功调整了 (II) 复合体中的磁性异性质.
- 辅助连接物对观察到的磁性异质性影响很小.
- 复合4b代表了一个有前途的场诱导单分子磁体.
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