| 基于亚胺衍生物的双核Co配合物的结构与磁性 | |
| Structures and magnetism of dinuclear Co complexes based on imine derivatives | |
| 摘要: 本研究基于3种亚胺衍生物bis-[4-(2-pyridylmethyleneamino)-phenyl]thioether (L1)、bis-[4-(2-pyridylmethyleneamino)-phenyl]ether (L2)和bis-[4-(2-pyridylmethyleneamino)-phenyl]methane (L3)合成了3例双核钴配合物。单晶X射线衍射表明配合物[Co2(L1)3](ClO4)4·2CH3CN (1)、[Co2(L2)3](ClO4)4·2CH3OH (2)和[Co2(L3)3](ClO4)4·2CH3OH (3)均为双核结构。磁性测试结果表明，化合物3在300 K时表现出由失溶剂诱导的不可逆的SCO行为，Co—N的平均键长从0.213 9(3) nm增加到0.215 3(3) nm。失溶剂后的化合物3表现出与化合物1和化合物2相似的变温磁化率行为。变温紫外可见光谱研究也表明化合物3发生失溶剂诱导的自旋态转变。 | |
| 关键词: 自旋交叉 双核Co配合物 亚胺衍生物 | |
| 基金项目: 国家自然科学基金(No.22222103，22173015，21801037，22071017)和中央高校基本科研业务费专项资金(No.DUT22LAB606)资助。 | |
| Abstract: This study presents the synthesis of three dinuclear cobalt complexes based on three imine derivatives: bis-[4-(2-pyridylmethyleneamino)-phenyl]thioether (L1), bis-[4-(2-pyridylmethyleneamino)-phenyl]ether (L2), and bis-[4-(2-pyridylmethyleneamino)-phenyl]methane (L3). Single-crystal X-ray diffraction analysis reveals that the complexes [Co2(L1)3](ClO4)4·2CH3CN (1), [Co2(L2)3](ClO4)4·2CH3OH (2), and [Co2(L3)3](ClO4)4·2CH3OH (3) all exhibit a dinuclear structure. Magnetic test results show that complex 3 exhibited irreversible SCO behavior induced by loss of solvent at 300 K, with the average Co—N bond length increasing from 0.213 9(3) to 0.215 3(3) nm. Meanwhile, the desolvated complex 3 exhibited paramagnetic behavior similar to that of complexes 1 and 2. Variable-temperature UV-Vis spectroscopic studies also indicate that complex 3 undergoes a solvent-loss-induced spin-state transition. | |
| Keywords: spin crossover dinuclear cobalt complex imine derivatives | |
| 投稿时间：2024-04-13 修订日期：2024-09-10 | |
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| 孙亚丹,李欣峰,刘强,HirokiOshio,孟银杉.基于亚胺衍生物的双核Co配合物的结构与磁性[J].无机化学学报,2024,40(11):2212-2220. | |
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| Support information: 相关附件： 20240131_supplementary_file.doc | |
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