Synthesis, structure, and magnetic properties of a dinuclear antiferromagnetically coupled cobalt complex

Wu D.-Y.; Huang W.; Wang L.; Wu G.

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Synthesis, structure, and magnetic properties of a dinuclear antiferromagnetically coupled cobalt complex

机译：双核反铁磁耦合钴配合物的合成，结构和磁性

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A new dinuclear cobalt(II) compound,[(TPA*)Co ~(II)(DHBQ ~(2-))Co II(TPA*)] ~(2+) (1 ~(2+)) {TPA* =tris[(3, 5-dimethyl-pyrazol-l-yl)methyl] amine, DHBQ = deprotonated 2, 5-dihydroxy-1, 4-benzoquinone}, was prepared and structurally and magnetically characterized. X-ray crystallography revealed the centrosymmetric dinuclear divalent cobalt ions bridged by DHBQ ~(2-) unit. The cobalt ions in the title compound have a distorted octahedral arrangement by coordination with four nitrogens of a TPA* and two oxygens of a bridging DHBQ unit. Due to the interdimer offset face-to-face π-π stacking in the crystallographic ac plane, the complex shows extended 2D supramolecular structure. Magnetic experiments showed the cobalt-based dinuclear compound exhibits antiferromagnetic interactions with g = 2.35 and J/k _B = -2.76 K, respectively.

机译：一种新的双核钴（II）化合物，[（TPA *）Co〜（II）（DHBQ〜（2-））Co II（TPA *）]〜（2+）（1〜（2+））{TPA *制备＝ [[3，5-二甲基-吡唑-1-基）甲基]胺，DHBQ ＝去质子化的2，5-二羟基-1，4-苯醌}，并对其结构和磁性进行表征。 X射线晶体学分析显示，DHBQ〜（2-）单元桥接了中心对称的二核二价钴离子。通过与TPA *的四个氮原子和桥接DHBQ单元的两个氧配合，标题化合物中的钴离子具有扭曲的八面体排列。由于二聚体在晶体学ac平面中错位面对面π-π堆积，该复合物显示出扩展的2D超分子结构。磁性实验表明，钴基双核化合物的反铁磁相互作用分别为g = 2.35和J / k _B = -2.76K。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2012年第2期|共4页
作者
Wu D.-Y.; Huang W.; Wang L.; Wu G.;
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正文语种 eng
中图分类化学;
关键词
Cobalt; Crystal structure; DHBQ; Magnetic properties;

机译：钴;晶体结构;DHBQ;磁性能;

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Synthesis, structure, and magnetic properties of a dinuclear antiferromagnetically coupled cobalt complex

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