The serialized expansion of high-nuclear clusters usually includes the controlled variable method and changes only a single variable. However, changing both variables will greatly increase the complexity of the reaction simultaneously. Therefore, the use of a two-component regulation reaction is rare. Herein, we used a diacylhydrazone ligand (H₄L¹) with multidentate chelating coordination sites for the reaction with Gd(NO₃)₃·6H₂O under solvothermal conditions to obtain an example of 16-nucleus disc-shaped cluster 1 with a brucite structure. The overall structure of cluster 1 can be regarded as an equilateral triangle, which is formed by three (L¹)^4– ions that can be regarded as “sides” and wrap the four-layer metal center Gd(III) ions. Notably, upon simultaneous regulation of the substituent of the ligand and the coordination anion, heptanuclear gadolinium cluster 2 was obtained. Cluster 2 can be regarded as a butterfly structure, which was formed by connecting two Gd₃L² molecules that were not in the same plane and through the central Gd(III) ion as an intersection. Moreover, hexanuclear gadolinium cluster 3 was obtained by changing the ligand substituent and adding an auxiliary ligand. Cluster 3 can be regarded as a chair structure, which was composed of two molecules of diacylhydrazone ligand (L²)^4– wrapping vacant cubane shared by four vertices. This study was the first to construct a series of high-nuclear gadolinium clusters through two-component regulation manipulation. The study of the magnetocaloric effect showed that the maximum values of −ΔS_m for clusters 1–3 were 34.05, 29.04, and 24.32 J kg^–1 K^–1, respectively, when T = 2 K and ΔH = 7 T.

中文翻译：

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通过双组分操作构建的一系列具有磁热效应的高核钆簇团聚体

高核团簇的序列化扩展通常包括控制变量法，并且只改变单个变量。然而，同时改变这两个变量会大大增加反应的复杂性。因此，很少使用双组分调节反应。在本文中，我们使用了diacylhydrazone配体（H ₄大号¹具有用于以Gd（NO反应的多齿螯合配位点）₃）₃ ·6H ₂ o在溶剂热条件得到的16 -核盘形群集的示例1具有水镁石结构。簇1的整体结构可以看成是一个等边三角形，由三个(L¹ ) ^4–离子，可视为“侧面”，包裹着四层金属中心Gd(III)离子。值得注意的是，在同时调节配体的取代基和配位阴离子时，得到了七核钆簇2。簇2可视为蝶形结构，由两个不在同一平面内的Gd ₃ L ²分子通过中心Gd(III)离子作为交点连接而成。此外，通过改变配体取代基并添加辅助配体，得到六核钆簇3。集群3可以看作是一个椅子结构，它由两个分子的二酰基腙配体（L ²）^{4 -}包裹四个顶点共享的空立方组成。该研究首次通过双组分调控操作构建了一系列高核钆簇。磁热效应研究表明，当T = 2 K 和 Δ H = 7 T时，簇1-3的 -Δ S _m最大值分别为 34.05、29.04 和 24.32 J kg ^–1 K ^–1。