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Hydrothermal Syntheses, Crystal Structure, and Magnetic Characterization of Two 3d-4f Heterometallic Coordination Polymers

机译:两种3d-4f杂金属配位聚合物的水热合成,晶体结构和磁性表征

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摘要

Two 3d-4f heterometallic coordination polymers, [(Gd2CuII)-Cu-III(pydC)(2)(CO3)(2)(H2O)(2)] center dot 2H(2)O (1, pydc = 2,5-pyridinedicarboxylate dianion) and [(Gd4COCoIII)-C-III-Co-II(mu(3)-OH)(3)(mu(3)-O)(pydC)(6)(H2O)(5)]center dot 8H(2)O (2) have been synthesized under hydrothermal conditions. In compound 1, 2D {[Gd-2(CO3)(2)](2+)}(n) sheets are connected by [Cu(pydc)(2)](2-) bridges, which give rise to the formation of a sandwich-like framework. Compound 2 exhibits a 3D framework constructed by Gd-4 clusters, CO2 subunits, and pydc spacers. The solid-state dc magnetic measurements reveal anti ferromagnetic behaviors of 1 and 2 in both compounds.
机译:两种3d-4f杂金属配位聚合物,[(Gd2CuII)-Cu-III(pydC)(2)(CO3)(2)(H2O)(2)]中心点2H(2)O(1,pydc = 2,5 -吡啶二羧酸二阴离子)和[(Gd4COCoIII)-C-III-Co-II(mu(3)-OH)(3)(mu(3)-O)(pydC)(6)(H2O)(5)]中心点8H(2)O(2)已在水热条件下合成。在化合物1中,2D {[Gd-2(CO3)(2)](2 +)}(n)片材通过[Cu(pydc)(2)](2-)桥连接,从而形成类似三明治的框架。化合物2展示了由Gd-4簇,CO2亚基和pydc间隔基构建的3D框架。固态直流磁测量显示两种化合物中1和2的反铁磁行为。

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