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首页> 外文期刊>Crystal growth & design >Spontaneous Resolution of Racemic Salen-Type Ligand in the Construction of 3D Homochiral Lanthanide Frameworks
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Spontaneous Resolution of Racemic Salen-Type Ligand in the Construction of 3D Homochiral Lanthanide Frameworks

机译:外消旋Salen型配体在3D手性镧系元素骨架构建中的自发拆分

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摘要

A series of three 3D homochiral lanthanide?organic frameworks {[Ln(H_2L_(SS))(NO_3)_2Cl]·2CH_2Cl_2}_n [Ln = La (1), Ce (2), and Nd (3)] with the unique diamond (dia) topology have been obtained by utilizing racemic salen-type ligand and mixed lanthanide salts. Complexes 1?3 are isostructural, crystallizing in the chiral tetragonal space group P4_32_12 and adopting an individual dia network formed by lanthanide ions and bridging ligand trans-N,N′-bis-(salicylidene)-(1S,2S)-cyclohexanediamine (H2LSS). This “from racemate to homochiral” approach may point to a new avenue for the preparation of homochiral materials.
机译:一系列三个3D同型手性镧系有机骨架{[Ln(H_2L_(SS))(NO_3)_2Cl]·2CH_2Cl_2} _n [Ln = La(1),Ce(2)和Nd(3)],具有唯一通过利用外消旋塞伦型配体和混合镧系元素盐获得了菱形(直径)拓扑。配合物1?3是同构的,在手性四方空间群P4_32_12中结晶,并采用由镧系元素离子和桥联配体反式N,N'-双-(水杨基)-(1S,2S)-环己二胺(H2LSS)形成的单个dia网络。 )。这种“从外消旋体到纯手性”的方法可能为纯手性材料的制备指明了一条新途径。

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