Easy obtainment of three-dimensional coordination polymer of zinc 1,2,4,5-benzenetetracarboxylate with para-amino-pyridinium cations

Within a wide study on coordination polymers coming from 1,2,4,5-benzenetetracarboxylate combined with aromatic amines and first row transition metal ions, we isolated and characterized a peculiar tridimensional coordination polymer made by an anionic mesoporous scaffold of Zn(II)-benzeneteracarboxylate whose charge is balanced by included p-aminopyridinium cations stacked up along two quasi-perpendicular crystallographic directions. The particular features of the solid state structure, easily obtained in standard conditions, prompts a wider research of possible related derivatives.

The described structure evidences a particular anionic 3D metal–organic-framework whose channels are filled by aromatic pyridinium ions. To our knowledge this simple ‘mix and wait’ synthesis, provides a first tip toward the building strategy of associated coordination polymers whose formation can be specifically driven by ancillary hydrogen binding amines.Figure optionsDownload as PowerPoint slide