Citation: Zihao XU, Lirong GUO, Jinzhong GU. Syntheses, crystal structures, and catalytic properties of zinc(Ⅱ) and cadmium(Ⅱ) coordination polymers constructed from a dicarboxylate ligand[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(5): 1063-1072. doi: 10.11862/CJIC.20250345 shu

Syntheses, crystal structures, and catalytic properties of zinc(Ⅱ) and cadmium(Ⅱ) coordination polymers constructed from a dicarboxylate ligand

College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China

Corresponding author: Lirong GUO, guolr@lzu.edu.cn Jinzhong GU, gujzh@lzu.edu.cn
Received Date: 18 November 2025
Revised Date: 31 December 2025

Figures(15)

Three zinc(Ⅱ) and cadmium(Ⅱ) coordination polymers, namely [Zn(μ-cada)(bipy)(H₂O)]_n (1), [Zn(μ₃-cada)(phen)·H₂O]_n (2), and [Cd(μ₃-cada)(phen)]_n (3), have been constructed hydrothermally at 160 ℃ using bis(4-carboxyphenyl)urea (H₂cada), 2, 2′-bipyridine (bipy)/1, 10-phenanthroline (phen), and zinc and cadmium chlorides. The three complexes were fully characterized by infrared spectroscopy, element analysis, thermogravimetric analysis, and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analysis indicates that complexes 1-3 form crystals in the monoclinic P2₁/n, monoclinic I2/a, and orthorhombic Pbcn space groups. These complexes all possess different 1D chain structures. Complexes 1 and 2 demonstrate substantial catalytic efficiency in the Knoevenagel condensation under ambient temperature conditions.
- coordination polymers,
- dicarboxylic acid,
- catalytic properties,
- Knoevenagel condensation reaction
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