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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A unique 2D framework containing linear trimeric cobalt(II)of mixed T_d-O_h-T_d geometries linked by two different single-carboxylate-aromatic amine ligands:structure and magnetic properties
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A unique 2D framework containing linear trimeric cobalt(II)of mixed T_d-O_h-T_d geometries linked by two different single-carboxylate-aromatic amine ligands:structure and magnetic properties

机译:独特的2D框架,包含由两个不同的单羧酸盐-芳族胺配体连接的混合T_d-O_h-T_d几何形状的线性三聚钴(II):结构和磁性

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摘要

A new 2D coordination polymer Co3(OH)2(pa)2(ina)2(1,pa=3-(1H-benzimidazol-2-yl)propanoic carboxylate,ina=isonicotinate)contained uncommon,linear Co(II)trimers of mixed T_d-O_b-T_d geometries,exhibits spin canting below 20 K.Such magnetic behavior mainly arises from the Dzyaloshinski-Moriya interaction from the anisotropic,mixed geometries trimeric Co(II)ions to the crimpled 2D network based on the nature of the binding modes of Co(II)-carboxylate trimer and the effect of the intertrimers arrangement of 1.The mixed single-carboxylate-aromatic amine ligands bridged metal systems display a new structurally authenticated example of a thick 2D layer,and also indicate homometallic Co(II)clusters with T_d-O_h-T_d mixed-geometries can result in relatively obvious noncompensation moments,according to different efficient spins of Co(II)at very low temperature,in spite of antiferromagnetic intracluster interactions.
机译:一种新型二维配位聚合物Co3(OH)2(pa)2(ina)2(1,pa = 3-(1H-苯并咪唑-2-基)丙酸羧酸酯,ina =异烟酸酯)包含不常见的线性Co(II)三聚体混合的T_d-O_b-T_d几何形状表现出低于20 K的自旋倾斜。这种磁行为主要来自Dzyaloshinski-Moriya相互作用,从各向异性的混合几何形状的三聚Co(II)离子到弯曲的2D网络,基于Co(II)-羧酸三聚体三聚体的键合方式和三元共聚物排列方式的影响1.混合的单羧酸盐-芳族胺配体桥接的金属体系显示了厚的二维层的新结构鉴定实例,也表明同金属Co( II)尽管反铁磁内部团簇相互作用,但在非常低的温度下,Co(II)的有效自旋不同,具有T_d-O_h-T_d混合几何形状的团簇仍会导致相对明显的非补偿力矩。

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