Abstract

The [Ni(1,3-bdc)(L)(H₂O)₂]_n·2nH₂O (1) coordination polymer (1,3-H₂bdc = 1,3-benzenedicarboxylic acid, L = 4,4′-N,N′-bis(3-pyridylformamide)diphenyl ether) is hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction and UV-Vis spectroscopy. The single crystal X-ray diffraction analysis reveals that each nickel(II) atom is six-coordinated with one 1,3-bdc anion, one L ligand, two coordinated and two free water molecules. The one-dimensional chain of complex 1 is formed by Ni metal and mixed ligands with a Ni⋯Ni distance of 7.780 Å. Furthermore, the existence of strong hydrogen bonding between chains and layers forms a final three-dimensional supramolecular structure. The UV-Vis spectroscopy of the title complex is briefly investigated. Thermal behavior is also examined.

中文翻译：

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涉及基于镍 (II)、1,3-苯二羧酸和含氮配体的氢键的 3D 超分子聚合物

摘要

[Ni(1,3-bdc)(L)(H ₂ O) ₂ ] _n ·2 n H ₂ O ( 1 ) 配位聚合物（1,3-H ₂ bdc = 1,3-苯二甲酸，L = 4,4'-N,N'-双（3-吡啶基甲酰胺）二苯醚）是水热合成的，并通过单晶 X 射线衍射和紫外-可见光谱进行结构表征。单晶 X 射线衍射分析表明，每个镍 (II) 原子与一个 1,3-bdc 阴离子、一个 L 配体、两个配位和两个自由水分子进行六配位。复数1的一维链由镍金属和混合配体形成，Ni⋯Ni 距离为 7.780 Å。此外，链和层之间存在强氢键，形成最终的三维超分子结构。简要研究了标题复合物的 UV-Vis 光谱。还检查了热行为。