A homochiral magnet based on D3 symmetric [(NaO3)Co3] clusters: from spontaneous resolution to absolute chiral induction
A homochiral magnet based on D3 symmetric [(NaO3)Co3] clusters: from spontaneous resolution to absolute chiral induction
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基于 D3 对称 [(NaO3)Co3] 簇的同手性磁体：从自发拆分到绝对手性感应
DOI：
10.1039/c5cc00003c
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Xian-Ming Zhang
中科院分区：
文献类型：
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作者：
Ru-Xin Yao;Xin Cui;Jun Wang;Xian-Ming Zhang
以手性六方晶系中的手性p63空间群为晶系，通过自发拆分合成了两种新型的对映体三维磁性配合物[NaCo3(IA)6](NO3)·H2O(1Δ和1Λ)，其中抗磁性的钠离子位于D3对称团簇的中心.这种自发分解是不可控的，而且依赖于批次。利用廉价的对映体扁桃酸作为手性诱导剂，通过圆二色谱证实，它们被驱动成可控的对映异构体的同手性结晶。
A pair of novel enantiomeric 3D magnetic complexes [NaCo3(IA)6](NO3)·H2O (1Δ and 1Λ) have been synthesized using an achiral ligand HIA via spontaneous resolution, which crystallize in the hexagonal crystal system with a chiral P63 space group, and diamagnetic sodium cations are located at the center of D3 symmetric clusters. This kind of spontaneous resolution is uncontrollable and dependent on batches. By utilizing cheap enantiopure mandelic acid as a chiral inducing agent, they are driven to controllable homochiral crystallization of the desired enantiomorph, confirmed by circular dichroism spectra.