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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Magnetic diversity in three-dimensional two-fold-interpenetrated structures: a story of two compounds
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Magnetic diversity in three-dimensional two-fold-interpenetrated structures: a story of two compounds

机译：三维双折服结构中的磁性多样性：两个化合物的故事

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摘要

A magnetostructural correlation has been carried out for two newly synthesized two-fold-interpenetrated three-dimensional structures. Compound 1, denoted as [Ni(L1)(L2)].2DMF (where L1 is 1,4-benzene-dicar-boxylic acid (BDC), L2 is 4,4-oxybis-(N-(pyridine-4-yl) benzamide), and DMF is N,N'-dimethylformamide), was observed to have a three-dimensional structure with two-fold interpenetration. Compound 2, denoted as [Co(L3)(L2)].2DMF (where L3 is 2,5-thiopehene-dicarboxylic acid (TDC)), was also observed to display a three-dimensional structure with an architecture identical to that of compound 1. Both compounds were well characterised using several techniques including single-crystal X-ray diffraction, powder X-ray diffraction, TGA, and IR. Magnetism and specific heat measurements of compound 1 revealed a canted-antiferromagnetic transition at T-N approximate to 4 K and a field-induced spin-flop transition at a relatively low field strength. These exotic features were attributed to the low-symmetry space group P(P (1) over bar) and single-ion anisotropy of the Ni2+ sub-lattice. In contrast, compound 2 was found to be weakly anti-ferromagnetic in nature with a negligible interaction between the magnetic Co2+ ions.
机译：已经对两个新合成的双折叠互连的三维结构进行了磁性结构相关性。化合物1，表示为[镍（L1）（L2）]。2DMF（其中L1是1,4-苯dicar-boxylic酸（BDC），L 2是4,4-氧代双 - （N-（吡啶-4- Y1）苯甲酰胺）和DMF是N，N'-二甲基甲酰胺），被观察到具有三维结构，具有双倍的间隔。化合物2，表示为[CO（L3）（L2）]。也观察到2DMF（其中L3是2,5-硫代恒二羧酸（TDC）），以显示与其相同的架构的三维结构化合物1.两种化合物的特征在于，使用包括单晶X射线衍射，粉末X射线衍射，TGA和IR的几种技术表征。化合物1的磁性和比热测量显示在T-N的近似到4k的倾斜 - 反铁磁性转变和在相对较低的场强处的场诱导的旋转转移转变。这些异种特征归因于低对称空间组P（P（1）上方的P（1））和Ni2 +子晶格的单离子各向异性。相反，发现化合物2在自然界中弱抗铁磁，磁共二氧+离子之间的相互作用可忽略不计。

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