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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Cobalt and copper pyridylmethylphosphonates with two- and three-dimensional structures and field-induced magnetic transitions
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Cobalt and copper pyridylmethylphosphonates with two- and three-dimensional structures and field-induced magnetic transitions

机译：具有二维和三维结构且场感应磁跃迁的钴和吡啶基甲基膦酸铜膦酸酯

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摘要

Two novel metal pyridylmethylphosphonates, namely, [Co(4-pmp)] (1) and [Cu(4-pmp)(H2O)] (2), (4-pmpH(2) = 4-pyridylmethylphosphonic acid), have been hydrothermally synthesized and characterized by X-ray diffraction, infrared spectroscopy, elemental analysis, and thermogravimetric analysis. In compound 1, each {PO3C} tetrahedron is corner-shared with three {CoNO3} tetrahedra and vice versa, thus forming a one-dimensional (1-D) inorganic chain along the a axis containing 8-membered rings of [(Co-O-P-O)(2)]. The inorganic chains are further connected by a 4-pmp(2-) ligand, generating a 2-D layered structure. Compound 2 displays a three-dimensional (3-D) framework structure, in which the inorganic layers are pillared by the pyridyl groups of the ligand, generating a 3-D pillared-layered structure. The magnetic properties of 1 and 2 have been studied. Compounds 1 and 2 behave as metamagnets at low temperature. The critical fields are about 70 kOe for 1 and 47 kOe for 2 at 1.8 K.
机译：两种新型金属吡啶基甲基膦酸酯，即[Co（4-pmp）]（1）和[Cu（4-pmp）（H2O）]（2），（4-pmpH（2）= 4-吡啶基甲基膦酸）水热合成，并通过X射线衍射，红外光谱，元素分析和热重分析进行表征。在化合物1中，每个{PO3C}四面体与三个{CoNO3}四面体角共享，反之亦然，因此沿包含[[Co- OPO）（2）]。无机链进一步通过4-pmp（2-）配体连接，生成2-D层状结构。化合物2显示三维（3-D）骨架结构，其中无机层被配体的吡啶基撑柱，从而产生3-D柱状层状结构。已经研究了1和2的磁性。化合物1和2在低温下表现为超磁体。临界场在1.8 K时约为1的70 kOe和2的47 kOe。

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