Water-induced dynamic crystal-to-amorphous transformation of cobalt(II) coordination and supramolecular frameworks containing benzene-1,2,4,5-tetracarboxylic acid and trans-1-(2-pyridyl)-2-(4-pyridyl)ethylene ligands

The crystal structures of two Co(II) metal-organic frameworks, a 3D network and a dinuclear molecule have been characterized. Interestingly, the property of the water-induced reversible crystal-to-amorphous transformation with chromotropism is observed for both distinct compounds.76