Two novel coordination polymers, [Bi2(2,3pydc)2(2,3pydcH)2(H2O)]n (1) and {(Et3NH)2[Bi(2,3pydc)(2,3pydcH)Cl2]}n (2) were prepared using as a prolinker pyridine-2,3-dicarboxylic acid (2,3pydcH2). The obtained complexes were fully characterized by elemental analysis, TG/DTG, FT-IR, solid-state photoluminescence, DFT calculations and single-crystal X-ray diffraction. The obtained complexes crystallized in the triclinic P-1 space group (1) and comprise dimeric units with two crystallographically different Bi(III) centers (polyhedra: distorted pentagonal bipyramid and bicapped trigonal prism) and monoclinic P21/c space group (2) with a distorted monocapped pentagonal bipyramid of Bi(III) center. The various coordination modes of bridging carboxylate ligands are responsible for the formation of 1D chains with 4,5C10 (1) and 2C1 (2) topology. The photoluminescence quantum yield for polymer 2 is 8.36%, which makes it a good candidate for more specific studies towards Bi-based fluorescent materials. Moreover, it was detected that polymer 1 is more than twice as active against H. pylori as polymer 2. It can be concluded that there is an existing relationship between the structure and the antibacterial activity because the presence of chloride and triethylammonium ions in the structure of complex 2 reduces the antibacterial activity.

中文翻译：

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新型 Bi(III) 配位聚合物与吡啶-2,3-二羧酸的结构见解：光致发光特性和抗幽门螺杆菌活性

两种新型配位聚合物，[Bi2(2,3pydc)2(2,3pydcH)2(H2O)]n (1) 和 {(Et3NH)2[Bi(2,3pydc)(2,3pydcH)Cl2]}n ( 2) 使用吡啶-2,3-二甲酸(2,3pydcH2)作为前连接体制备。通过元素分析、TG/DTG、FT-IR、固态光致发光、DFT计算和单晶X射线衍射对所得配合物进行了充分表征。获得的配合物在三斜P-1空间群(1)中结晶，并包含具有两个晶体学上不同的Bi(III)中心的二聚单元(多面体：扭曲的五角双锥体和双帽三棱柱)和单斜P21/c空间群(2) Bi(III) 中心的扭曲单帽五角双锥体。桥连羧酸配体的各种配位模式负责形成具有 4,5C10 (1) 和 2C1 (2) 拓扑的一维链。聚合物2的光致发光量子产率为8.36%，这使其成为对铋基荧光材料进行更具体研究的良好候选者。此外，还检测到聚合物1的抗幽门螺杆菌活性是聚合物2的两倍以上。可以得出结论，由于结构中存在氯离子和三乙铵离子，因此结构与抗菌活性之间存在关系。复合物2的加入会降低抗菌活性。