Temperature- and Stoichiometry-Controlled Dimensionality in a Magnesium 4,5-Imidazoledicarboxylate System with Strong Hydrophilic Pore Surfaces

1D, 2D, and 3D three metal−organic hybrid frameworks of MgII have been synthesized using 4,5-imidazoledicarboxylic acid (H3idc) with control of the temperature and stoichiometry in a hydrothermal technique. All of the frameworks show high thermal stability, and frameworks 1D and 3D provide highly hydrophilic pore surfaces, correlated by the selective sorption of water molecules over the organic vapor and other gases like N2 and CO2.