A study of zinc(II) coordination polymers with identical meso-helix based on 1,4-bis(2-methyl-imidazol-1-yl)butane

Four new complexes containing a same meso-helical chain constructed by Zn(II) ions and bib ligands have been synthesized. 1 and 2 feature similar 2D wave-like topology; 3 shows 4-fold interpenetrated 3D framework with {6^6} topology; 4 displays 3-fold interpenetrated 3D net with {6^6} topology.