Solvent-induced supramolecular chirality switching of bis-(trisalkoxy)-hexavanadates
Solvent-induced supramolecular chirality switching of bis-(trisalkoxy)-hexavanadates
复制标题
溶剂诱导的双(三烷氧基)-六钒酸盐的超分子手性转换
DOI：
10.1016/j.poly.2012.06.007
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发表时间：
2013-03-22
期刊：
影响因子：
2.6
通讯作者：
Wei, Yongge
中科院分区：
文献类型：
--
作者：
Wu, Pingfan;Chen, Jiake;Wei, Yongge
在水溶液中用季戊四醇对六钒酸酯进行改性，得到两个新的化合物，但分别在水和乙腈中重结晶。通过FT-IR、UV-Vis和单晶X射线衍射表征了（Bu 4 N）（2）[V6 O 13 {（OCH 2）（3）CCH 2 OH}（2）中心点H2O]（1）和（Bu 4 N）（2）[V6 O 13 {（OCH 2）（3）CCH 2 OH）（2）中心点4CH（3）CN]（2）（Bu，n-butyl）的分子结构。化合物1和2分别以单斜和三斜空间群结晶。化合物1在二维分子组装中表现出超分子手性，而化合物2不具有超分子手性。基于这两种晶体结构，讨论了溶剂分子在聚氧乙烯基杂化材料自组装体系中对超分子手性形成的作用。(C)2012爱思唯尔有限公司保留所有权利。
Two new compounds were obtained by modifying hexavanadate cores with pentaerythritol in aqueous solution, however, re-crystallized in water and acetonitrile, respectively. The molecular structures for (Bu4N)(2)[V6O13{(OCH2)(3)CCH2OH}(2)center dot H2O] (1) and (Bu4N)(2)[V6O13{(OCH2)(3)CCH2OH)(2)center dot 4CH(3)CN] (2) (Bu, n-butyl) have been characterized by FT-IR, UV-Vis, and single crystal X-ray diffraction. Compound 1 and 2 crystallize in monoclinic and triclinic space groups, respectively. Compound 1 shows supramolecular chirality in two-dimensional molecular assemblies while 2 does not have such chiral structure. The role of solvent molecules to the formation of supramolecular chirality in self-assembly architectures of polyoxometalates-based hybrid materials is discussed based on these two crystal structures. (C) 2012 Elsevier Ltd. All rights reserved.