| 一例具有单分子磁体行为的单核钴-氮氧自由基异自旋配合物 |
| A mononuclear CoⅡ-nitronyl nitroxide hetero-spin complex with single-molecule magnet behavior |
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| 摘要: 合成并表征了一例2p-3d异自旋配合物[Co (hfac)2(NIT-PyzMe-PhCHO)](1)，其中hfac=六氟乙酰丙酮，NIT-PyzMe-PhCHO=2-(3-(1H-咪唑-1-亚甲基)苯甲醛)-4，4，5，5-四甲基咪唑啉-1-氧基-3-氧化物。配合物1是单核结构，CoⅡ离子与直接配位的氮氧基团之间存在强的反铁磁耦合。此外，与磁弛豫相关的频率依赖的虚部信号证实了其单分子磁体行为。 |
| 关键词: 氮氧自由基 CoⅡ离子 2p-3d异自旋 单分子磁体 |
| 基金项目: 山西省基础研究项目-自由探索类(No.20210302124460)资助。 |
| Abstract: A 2p-3d hetero-spin complex, namely [Co(hfac)2(NIT-PyzMe-PhCHO)] (1), where hfac=hexafluoroacetyl- acetone, NIT-PyzMe-PhCHO=2-(3-(1H-imidazol-1-ylmethyl)benzaldehyde)-4,4,5,5-tetramethylimidazoline-1-oxyl-3- oxide, has been successfully isolated and characterized. Complex 1 displays a mononuclear structure. Strong antifer- romagnetic interaction was detected between the CoⅡ ion and the directly coordinated nitroxide group. Moreover, the frequency-dependent out-of-phase signals related to the slow relaxation of magnetization verify the typical single- molecule magnet behavior of the system. |
| Keywords: nitronyl nitroxide CoⅡ ion 2p-3d hetero-spin single-molecule magnet |
| 投稿时间：2023-03-12 修订日期：2023-06-11 |
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| 李宝毅,郝晓婷,李弘道.一例具有单分子磁体行为的单核钴-氮氧自由基异自旋配合物[J].无机化学学报,2023,39(10):2003-2008. |
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| Support information: 相关附件： 230077_Supplementary_Informations.docx |
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