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Two new Co(II)-coordination polymers, [Co2(L1)2(H2O)3(SO4)2](H2O)11 (1) and [Co(H2O)2(L1)(L2)](H2O)4 (2, L1 = 3,5-di(1H-imidazol-1-yl)pyridine, H2L2 = 4-sulfobenzoic acid) have been successfully prepared by the usage of the layering method. The obtained two complexes were characterized by single crystal X-ray diffraction and elemental analyses. The results show that complex 1 is a 1D v-shaped chain structure with H-bond interactions observed in its network while complex 2 is a 2D layered structure with a ttd topological net. In addition, the anti-liver cancer activity of complexes 1 and 2 was evaluated via the CCK-8 assays against the HHCC liver cancer cell lines. [ABSTRACT FROM AUTHOR]