Two novel Zn(II) coordination polymers constructed by the same dicarboxylate and different bis-imidazole as co-ligand: Syntheses, crystal structures and properties

•Two novel zinc complexes were synthesized with the same dicarboxylate and different bis-imidazole as co-ligand.•SNUT-7 exhibits 2D→2D twofold interpenetrating framework.•SNUT-8 exhibits a 2D + 2D → 3D framework structure.•Their photoluminescence properties and photocatalytic performance were also investigated.