| 一例四核Gd(Ⅲ)簇的结构、磁性、抑菌活性及大的磁热效应 |
| Structure, Magnetic Property, Bacteriostatic Activity, and Large Magnetocaloric Effect of a Tetranuclear Gd(Ⅲ)-Based Cluster |
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| 摘要: 以多齿配体1，3-二（三（羟甲基）甲胺基）丙烷（H6L）为原料，采用溶剂热法合成了一例有趣的多核Gd（Ⅲ）簇合物1，分子式为[Gd4（CH3COO）6（H3L）2]·2CH3OH。系统地研究了簇1的结构、磁性及抑菌活性。结构分析表明，簇1包含一个蝴蝶形的Gd4核，且Gd（Ⅲ）离子中心存在2种不同的配位环境。磁性研究表明，簇1中存在反铁磁相互作用，并且表现出显著的低温磁制冷性能（T=2.0 K和ΔH=7.0 T时，-ΔSm=40.6 J·kg-1·K-1）。同时，簇1对5种常见细菌均具有抑菌活性，其中对藤黄微球菌的抑菌效果最好。 |
| 关键词: 四核钆(Ⅲ)簇 结构 磁性 磁热效应 抑菌活性 |
| 基金项目: 凯里学院自然科学研究博士专项课题（No.BS201418）和贵州省教育厅自然科学基金（No.KY[2019]190）资助 |
| Abstract: An interesting polynuclear Gd(Ⅲ)-based cluster with the molecular formula[Gd4(CH3COO)6(H3L)2]· 2CH3OH (1) based on a polydentate ligand (H6L=1, 3-bis(tris(hydroxymethyl)methylamino)propane) has been successfully synthesized via the solvothermal method. The structure, magnetic property, and bacteriostatic activity of cluster 1 have been systematically studied. Structural analysis shows that there are two distinct coordination environments of central Gd(Ⅲ) ions and cluster 1 mainly contains a butterfly Gd4 core. The magnetic study reveals that antiferromagnetic interaction exists in cluster 1. More importantly, cluster 1 displayed significant cryogenic magnetic refrigeration property with-ΔSm=40.6 J·kg-1·K-1 at T=2.0 K and ΔH=7.0 T. Moreover, cluster 1 possessed antibacterial activity on five common bacteria, among which the antibacterial effect on Micrococcus luteus was the best. |
| Keywords: tetranuclear Gd(Ⅲ)-based cluster structure magnetic property magnetocaloric effect antibacterial activity |
| 投稿时间：2022-03-23 修订日期：2022-07-13 |
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| 侯银玲,季甲,左瑶,陆胜桃,王欣超,胡晓蒙,黄晓强.一例四核Gd(Ⅲ)簇的结构、磁性、抑菌活性及大的磁热效应[J].无机化学学报,2022,38(11):2267-2274. |
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| Support information: 相关附件： 220130_Supplementary_data.docx |
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