Abstract A new one-dimensional Zn(II) coordination polymer, {[ZnCl2(BBM)]·CH3OH} n (2,2-(1,4-butanediyl)bis-1,3-benzimidazole [BBM]), has been obtained from the hydrothermal reaction of zinc chloride with the flexible bis-benzimidazole ligand BBM and characterized by single-crystal X-ray diffraction, elemental analysis, IR and UV–vis spectra. Structural analysis has revealed that the BBM ligand connects the Zn(II) atoms to form a square-wave chain, which is further extended into supramolecular layers through hydrogen bonds and π···π stacking interactions. Solid-state fluorescence investigations showed that the Zn(II) coordination polymer has an emission peak at 381 nm upon excitation at 330 nm, which is attributed to ligand-centered luminescence. It is only slightly red shifted as compared to the ligand but partially quenched due to the strong π···π stacking interactions.

中文翻译：

---

基于柔性双（苯并咪唑）配体的锌（II）配位聚合物：合成、晶体结构和荧光研究

摘要 一种新的一维 Zn(II) 配位聚合物 {[ZnCl2(BBM)]·CH3OH} n (2,2-(1,4-butanediyl)bis-1,3-benzimidazole [BBM]),由氯化锌与柔性双苯并咪唑配体 BBM 的水热反应获得，并通过单晶 X 射线衍射、元素分析、IR 和 UV-vis 光谱表征。结构分析表明，BBM配体连接Zn(II)原子形成方波链，通过氢键和π···π堆积相互作用进一步扩展到超分子层。固态荧光研究表明，Zn(II) 配位聚合物在 330 nm 激发后在 381 nm 处具有发射峰，这归因于以配体为中心的发光。