摘要
在微波辐射条件下合成了两种新的离子液体金属配合物[Ni(m-HNDA)2(H2O)4](1),[Zn(m-HNDA)2(H2O)4]·H2O(2),用元素分析、红外光谱、紫外光谱对它们进行了表征,通过X射线单晶衍射测定了它们的晶体结构.在晶体结构中,标题物通过基团间的嵌合作用,π-π相互作用和分子间氢键自组装成了三维网状的多孔结构.由氢键和π-π相互作用的强弱推测标题物的稳定性次序2>1,与实测热稳定性次序完全吻合;电化学性质表明,金属的配位改变了配体的循环伏安性质.另外,两种配合物可在水溶液中高选择性的识别氟离子.
Two novel ionic liquids metal complexes [Ni（m-HNDA）2（H2O）4] （1）, [Zn（m-HNDA）2（H2O）4]·H2O （2） have been synthesized with MWI method and characterized by elemental analysis, IR and ultraviolet spectrum. The single crystal structures of the title compounds were determined by X-ray diffraction. In crystal, the title compounds self-assembled to three-dimensional porous structure by π-π interaction, hydrogen bonding and intercalation of groups. Moreover, according to the stabilities of the hydrogen bonds and the intermolecular π-π interaction, we could predict that the compound 2 more stable than 1, which is in good agreement with the available experiments thermal stabilities. The results of the electrochemical properties show the cyclic voltammetry of ligand changed for coordination of the metal. In addition, in aqueous solutions, two compounds show single selectivity for F-.
出处
《中国科学：化学》
CAS
CSCD
北大核心
2011年第5期869-877,共9页
SCIENTIA SINICA Chimica
基金
国家自然科学基金(21064006)
甘肃省然科学基金(1010RJZA018)资助
关键词
离子液体
微波合成
自组装
多孔结构
Π-Π相互作用
嵌合作用
ionic liquids
microwave synthesis
self-assembled
porous structure
π-π interaction
intercalation
