Abstract In recent years, coordination polymers (CPs) have shown great potential as heterogeneous catalytic platform in various organic synthesis processes. However, the bottlenecks of low stability and inferior activity still limited their practical applications. In this work, by rational design and regulation of functional ligand and synthesis conditions, a new Co-based CP (Co-CP) was successfully obtained using H2O as the sole solvent and was structurally characterized via a series of techniques, including X-ray single crystal diffraction, powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), fourier transform infrared spectroscopy (FT-IR). The coordination of Co(II) sites together with the mixed carboxyl and triazolyl groups ligands formed 1D bands and further assembled into a 3D crystal structure through hydrogen bonding. As the heterogeneous catalyst, the excellent activity in catalyzing hydrogenation of 4-nitrophenol (4-NP) have achieved over the newly obtained Co-CP under relatively mild conditions. Furthermore, benefiting to the high moisture stability, the catalyst could be re-used for at least five times without obvious degradation in catalytic performance.

中文翻译：

---

基于羧基三唑基双功能配体的钴 (II) 配位聚合物：4-硝基苯酚的合成、表征和催化还原

摘要 近年来，配位聚合物（CPs）在各种有机合成过程中作为多相催化平台显示出巨大的潜力。然而，稳定性低和活性差的瓶颈仍然限制了它们的实际应用。在这项工作中，通过对功能配体和合成条件的合理设计和调控，以 H2O 为唯一溶剂，成功获得了一种新的 Co 基 CP（Co-CP），并通过 X 射线等一系列技术对其进行了结构表征。单晶衍射、粉末 X 射线衍射 (PXRD)、热重分析 (TGA)、傅立叶变换红外光谱 (FT-IR)。Co(II) 位点与混合的羧基和三唑基配体的配位形成 1D 带，并通过氢键进一步组装成 3D 晶体结构。作为多相催化剂，在相对温和的条件下，新获得的 Co-CP 在催化 4-硝基苯酚 (4-NP) 加氢方面取得了优异的活性。此外，得益于高水分稳定性，催化剂可以重复使用至少五次，催化性能没有明显下降。