Two three-dimensional cadmium supramolecular architectures containing extensive hydrogen-bonding networks based on CdSO4 and bis-imidazole ligands

►Two interesting architectures containing different extensive hydrogen-bonding networks. ► Compound 1 has an infinite 1D double chain structure and 2 contains an infinite 1D helix channel. ► Subtle changes in the ligand structure may have a strong influence on architectures of MOF.