Solvent-directed synthesis of chiral and non-centrosymmetric metal–organic frameworks based on pyridine-3,5-dicarboxylate

• We obtained three new MOFs based on pyridine-3,5-dicarboxylic acid.
• JUC-58 is 3-d homochiral MOFs, while JUC-59-M (M = Co, Ni) has a lig-b net.
• Glycol could play an important role in the formation of the MOFs.

Three new metal–organic frameworks Mn(3,5-PDC)(H2O)
• (glycol) (JUC-58), M(3,5-PDC)(H2O)(glycol)
• (H2O) (JUC-59-M, M = Co, Ni), have been synthesized by the assembly of tri-connected ligand pyridine-3,5-dicarboxylic acid (3,5-PDC) and different metals under the solvothermal condition in DMF and glycol. JUC-58 is an unusual example of 3-D chiral MOF with helical channels, while JUC-59-Co and JUC-59-Ni are isostructural and have non-centrosymmetric structures with a very rare 3-connected non-interpenetrated lig-b net. It is worth noting that glycol could play an important role in the formation and stabilization of these networks.

JUC-58 and JUC-59-Co, Ni were synthesized by pyridine-3,5-dicarboxylic acid and different metals under solvothermal condition in DMF and glycol. JUC-58 is homochiral, while JUC-59-Co, Ni have a lig-b net. It is worth noting that glycol could play an important role in the formation and stabilization of the MOFs.Figure optionsDownload as PowerPoint slide