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Two novel coordination polymers, [Bi 2 (2,3pydc) 2 (2,3pydcH) 2 (H 2 O)] n ( 1 ) and {(Et 3 NH) 2 [Bi(2,3pydc)(2,3pydcH)Cl 2 ]} n ( 2 ) were prepared using as a prolinker pyridine-2,3-dicarboxylic acid (2,3pydcH 2 ). 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 P 2 1 / 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.

international journal of molecular sciences

Structural Insights into New Bi(III) Coordination Polymers with Pyridine-2,3-Dicarboxylic Acid: Photoluminescence Properties and Anti-Helicobacter pylori Activity