...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Supramolecular Behavior of an Isomorphous Series of Five Bis(2-methylimidazolium 2,6-dicarboxypyridine)M(II)Complexes
【24h】

Supramolecular Behavior of an Isomorphous Series of Five Bis(2-methylimidazolium 2,6-dicarboxypyridine)M(II)Complexes

机译：同构系列的五个双（2-甲基咪唑2,6-二羧基吡啶）M（II）配合物的超分子行为

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The supramolecular chemistry and crystal structures of five bis(2-methylimidazolium 2,6-dicarboxypyridine)M(II)complexes,where M=Zn,Cu,Ni,Co,and 7:3 Mn/Cu(1-5,respectively),are reported.These complexes form building blocks with nearly identical molecular structures that crystallize in the same packing pattern.Anions of 2,6-dicarboxypyridine and cations of 2-methylimidazole form N-H…0 and O-H…O hydrogen bonds that dominate crystal packing by forming linear ribbons of molecules.Thus,complexes 1-5 form an isomorphous series with a single robust crystalline architecture that accommodates five different transition metals without altering molecular packing.The growth of crystals from solutions that contain two different metal complexes produces mixed crystals in which mixtures of the different metal complexes are incorporated in the same relative molar ratio present in solution.This technique was used to grow crystals of 5 with Mh and Cu complexes in a 7:3 molar ratio.Complexes 1-5 form crystalline solids that represent a novel class of modular materials in which the organic ligands serve as a structural component that defines a single packing arrangement that persists over a range of structures and in which the metal serves as an interchangeable component with which to vary the physical properties of the material.The molecular and crystal structures of bis(2-methylimidazolium 2,6-dicarboxypyridine)M(II)complexes 1-5 are reported and compared to those of a related family of bis(imidazolium 2,6-dicarboxypyridine)M(II)dihydrate complexes 1'-5'(M=Zn,Cu,Ni,Co,and Mn)reported previously.We show that complexes 1-5 and 1'-5'have similar packing arrangements and that introducing a methyl substituent(similar in size to water)at the C2 position of imidazole displaces water and prevents it from being incorporated into the lattice of 1-5.
机译：五个双（2-甲基咪唑2,6-二羧基吡啶）M（II）配合物的超分子化学和晶体结构，其中M = Zn，Cu，Ni，Co和7：3 Mn / Cu（1-5）这些配合物形成了具有几乎相同分子结构且以相同堆积模式结晶的结构单元。2,6-二羧基吡啶的阴离子和2-甲基咪唑的阳离子形成NH…0和OH…O氢键，这些氢键主导着晶体堆积。因此，配合物1-5形成具有同一个同构物系列，具有一个坚固的晶体结构，可以容纳五种不同的过渡金属而不会改变分子堆积。包含两种不同金属配合物的溶液中晶体的生长产生混合晶体，其中以溶液中存在的相同的相对摩尔比掺入不同金属络合物的混合物，该技术用于生长摩尔比为7：3的具有Mh和Cu络合物的5晶体。复合物1-5形成晶体代表新型一类模块化材料的塔林固体，其中有机配体充当结构组分，该结构组分定义了在一系列结构上持续存在的单个堆积结构，其中金属充当了可互换的组分，可用来改变物理性质报告了双（2-甲基咪唑2,6-二羧基吡啶）M（II）配合物1-5的分子和晶体结构，并将其与相关家族的双（咪唑2,6-二羧基吡啶）M的分子和晶体结构进行了比较（II）二水合物1'-5'（M = Zn，Cu，Ni，Co和Mn）先前报道过。我们表明，配合物1-5和1'-5'具有相似的堆积方式，并引入了甲基取代基（大小与水相似）在咪唑的C2位置置换水，并防止水混入1-5的晶格中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号