Assembly of Two Metal-Organic Frameworks with Intrinsic Chiral Topology from Achiral Materials

The assembly of Cu(CH3COO)(2)center dot H2O and pyridine-4,5-imidazoledicarboxylic acid (H(3)PylmDC) tinder solvothermal conditions in the presence of different organic templates yielded two three-dimensional chiral frameworks, vertical bar C3H10N2)(C3H7NO)(0.5)-(H2O)(2)vertical bar[(CuC10H5O4N3)-C-II] (1) and vertical bar(C4H9NO)(0.5)(H2O)(8)vertical bar[(Cu2CuI)-Cu-II(C10H5O4N3)(2)(C10H6O4N3)] (2). Both of the compounds crystallized in the cubic, P4(3)32 space group and possessed open helical channels in the frameworks. To the best of our knowledge, compounds 1 and 2 present the first synthesized MOFs with a bmn and lcy-a net. Further characterization of the two compounds has been performed, including X-ray powder diffraction, inductively coupled plasma analysis, CHN, IR spectra, fluorescence spectra, X-ray photoelectron spectroscopy spectrum and thermogravimetric-differential thermal analysis.