Synthesis and Characterization of a Soluble Bimetallic Oxalate-Based Bidimensional Magnet: [K(18-crown-6)]₃[Mn₃(H₂O)₄{Cr(ox)₃}₃]

The “templating” K crown ether cation allows for the preparation of soluble layered oxalate-based bimetallic magnets, as in [K(18-crown-6]3{Mn3(H2O)4[Cr(ox)3]3}, with an unprecedented bidimensional polymeric anionic network that involves both oxalato bridges and H bonds. As in other 2D oxalate-bridged compounds, the compound behaves as a soft ferromagnet, with the onset of magnetic ordering occurring at 3.3 K."模板化"钾冠醚阳离子可用于制备可溶性层状草酸盐基双金属磁体，例如化合物[K(18-冠-6 (18-crown-6))]₃{Mn₃(H₂O)₄[Cr(草酸根 (oxalate))₃]₃}，其拥有前所未有的二维聚合物阴离子网络，该网络同时包含草酸根桥联结构与氢键。与其他二维草酸根桥联化合物类似，该化合物表现为软铁磁体，其磁有序起始温度为3.3 K。