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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Supramolecular structures with the 2-propyl-4,5-dicarboxy-1H-imidazole ligand: Hydrothermal synthesis, structures, and photoluminescence
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Supramolecular structures with the 2-propyl-4,5-dicarboxy-1H-imidazole ligand: Hydrothermal synthesis, structures, and photoluminescence

机译：具有2-丙基-4,5-二羧基-1H-咪唑配体的超分子结构：水热合成，结构和光致发光

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摘要

Self-assembly of the rigid organic ligand 2-propyl-4,5-dicar- boxy-1H-imidazole (L) with different metal ions (Zn~(2+),Ni ~(2+),Cu~(2+), Cd~(2+)) led to four new complexes, namely, [M(L)(phen)] [M = Zn (1); Ni (2); Cd (3)] and [Cu(L)(4)] (phen = 1,10-phenanthroline). Their structures were determined by single-crystal X-ray diffraction analyses, and they were further characterized by elemental analysis, IR spectroscopy, and thermogravimetric analysis. Whereas compounds 1, 2, and 3 are discrete units, hydrogen-bonding interactions play a vital role in these complexes. Compounds 1 and 2 form one-dimensional (1D) and two-dimensional (2D) structures through hydrogen-bonding interactions with helical character. In 1, the hydrogen bonds (O-H?O) alternately bridge the M~(II)cations of the discrete units to form a one-dimensional (1D) infinite helical chain. Complex 2 forms a 2D helical layer through parallel hydrogen bonds (N/O-H?O/N) between two adjacent helical chains. In 3, the hydrogen bonds (N-H?O) connect adjacent discrete units into a ten-membered ring with extension into a one-dimensional double-chain supramolecular structure. Complex 4 is a two-dimensional gridlike (4,4) topological layer which is extended to a 3D network by hydrogen bonding. The solid-state fluorescence spectrum of complex 3 was determined.
机译：具有不同金属离子（Zn〜（2 +），Ni〜（2 +），Cu〜（2+）的刚性有机配体2-丙基-4,5-二甲基-1H-咪唑（L）的自组装），Cd〜（2+））产生了四个新的络合物，即[M（L）（phen）] [M = Zn（1）;镍（2）; Cd（3）]和[Cu（L）（4）]（phen = 1,10-菲咯啉）。它们的结构通过单晶X射线衍射分析确定，并通过元素分析，红外光谱和热重分析进一步表征。化合物1、2和3是离散单元，而氢键相互作用在这些配合物中起着至关重要的作用。化合物1和2通过具有螺旋特征的氢键相互作用形成一维（1D）和二维（2D）结构。在1中，氢键（O-H2O）交替桥接离散单元的M〜（II）阳离子，形成一维（1D）无限螺旋链。络合物2通过两个相邻的螺旋链之间的平行氢键（N / O-H 2 O / N）形成二维螺旋层。在图3中，氢键（N-H 2 O）将相邻的离散单元连接成一个十元环，并延伸成一维双链超分子结构。配合物4是二维的网格状（4,4）拓扑层，通过氢键扩展到3D网络。测定配合物3的固态荧光光谱。

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