Shen Yongbing, Sugimoto Kunihisa, Yamashita Satoshi, Yoshida Takefumi, Nakazawa Yasuhiro, Breedlove Brian K, Zhang Haitao, Yamashita Masahiro
Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan.
Diffraction & Scattering Division, Japan Synchrotron Radiation Research Institute (ASRI), 1-1-1 Kouto, Sayo-Cho, Sayo-Gun, Hyogo 679-5198, Japan.
Chem Commun (Camb). 2022 Mar 18;58(23):3763-3766. doi: 10.1039/d2cc00416j.
We report here a structurally perfect kagomé lattice {Cu(bpy)(melamine)} (1), where bpy is 4,4'-bipyridine and [SiF] is a hexafluorosilicate anion. In comparison to general 1D linear, 2D layered and 3D cubic metal-organic frameworks, by using Cu nodes and bpy ligands, a perfect kagomé lattice was synthesized by introducing symmetrical melamine molecules. Magnetic susceptibility and low-temperature heat capacity measurements indicated weak antiferromagnetic interactions between the spins and no long-range magnetic ordering to 0.7 K. Using symmetrical melamine molecules can be considered as a challenging synthetic strategy to afford new topological materials.
我们在此报告一种结构完美的 kagomé 晶格{Cu(bpy)(三聚氰胺)} (1)，其中 bpy 为 4,4'-联吡啶，[SiF]为六氟硅酸根阴离子。与一般的一维线性、二维层状和三维立方金属有机框架相比，通过使用铜节点和 bpy 配体，引入对称的三聚氰胺分子合成了完美的 kagomé 晶格。磁化率和低温热容测量表明，自旋之间存在弱反铁磁相互作用，且在 0.7 K 时没有长程磁有序。使用对称的三聚氰胺分子可被视为一种具有挑战性的合成策略，以提供新的拓扑材料。
