| 基于多取代咪唑并[1，5-a]吡嗪骨架的三核铜配合物的原位合成、晶体结构及磁性表征 |
| In situ synthesis, crystal structure, and magnetic characterization of a trinuclear copper complex based on a multi-substituted imidazo[1,5-a]pyrazine scaffold |
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| 摘要: 以前驱配体N，N'-双(吡嗪-2-基甲基)吡嗪-2，3-二甲酰胺(H2L1)与CuSO4·5H2O在室温水溶液中反应，意外制备了具有多取代咪唑并[1，5-a]吡嗪骨架的三核铜配合物[Cu3(L2)2(SO4)2(H2O)7]·8H2O (1)，其中HL2=1-羟基-3-(吡嗪-2-基)-N-(吡嗪2-基甲基)咪唑并[1，5-a]吡嗪-8-甲酰胺。通过红外光谱、单晶X射线衍射分析及变温磁化率测定对配合物进行了表征。单晶X射线衍射分析表明，该配合物由3个Cu(Ⅱ)、2个原位生成的HL2配体、2个参与配位的SO42-、7个参与配位的H2O以及8个未参与配位的H2O构成。变温磁化率测试表明1的相邻铜离子间存在铁磁耦合作用。 |
| 关键词: 酰胺配体 铜配合物 单晶结构 C—N偶联 磁性表征 |
| 基金项目: |
| Abstract: A trinuclear copper complex [Cu3(L2)2(SO4)2(H2O)7)] ·8H2O (1) (HL2=1 hydroxy3 (pyrazin2 yl) N (pyrazin-2-ylmethyl)imidazo[1,5-a]pyrazine-8-carboxamide) with a multi-substituted imidazo[1,5-a]pyrazine scaffold was serendipitously prepared from the reaction of the pro-ligand of H2L1 (N,N'-bis(pyrazin-2-ylmethyl)pyrazine-2,3dicarboxamide) with CuSO4·5H2O in aqueous solution at room temperature. Complex 1 was characterized by IR, single-crystal X-ray analysis, and magnetic susceptibility measurements. Single-crystal X-ray analysis reveals that the complex consists of three Cu(Ⅱ) ions, two in situ transformed L2- ligands, two coordinated sulfates, seven coordinated water molecules, and eight uncoordinated water molecules. Magnetic susceptibility measurement indicates that there are obvious ferromagnetic coupling interactions between the adjacent Cu(Ⅱ) ions in 1. |
| Keywords: amide ligand copper complex single crystal structure C—N coupling magnetic characterization |
| 投稿时间：2024-07-15 修订日期：2024-11-18 |
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| 王召东.基于多取代咪唑并[1，5-a]吡嗪骨架的三核铜配合物的原位合成、晶体结构及磁性表征[J].无机化学学报,2025,41(3):597-604. |
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