Three‐Dimensional Porous Heterometallic‐Organic Frameworks: Synthesis, Luminescent, Magnetic, Adsorption and Hydrogen Storage Properties

Two three‐dimensional (3D) porous heterometal‐organic frameworks (HMOFs) with isostructures, [Zn 2 Cd(OH)(BTC) 2 (DMF)(H 2 O) 2 ]·(H 3 O) (JUC‐155A) and [ZnCo 2 (OH)(BTC) 2 (DMF)(H 2 O) 2 ]·(H 3 O) (JUC‐155B) (JUC=Jilin University China, BTC=1,3,5‐benzenetricarboxylate and DMF= N , N ‐dimethylformamide), have been successfully synthesized by utilizing two kinds of 3d metal ions (Zn(II) and Cd(II) or Zn(II) and Co(II)) under conformable conditions. X‐ray crystallography reveals that both HMOFs consist of trinuclear metal‐carboxylate secondary building units (SBUs), and these SBUs are interlinked by the phenyl groups of BTC ligands to generate 3D open‐frameworks with two types of channels of about 6.3 and 10.7 Å. Both HMOFs show the multifunctional properties in photoluminescence and adsorption. JUC‐155B also exhibits an antiferromagnetic interaction, owing to the presence of dinuclear cobalt centers. Additionally, the high‐pressure hydrogen storage of JUC‐155A has been also examined at 77 K. By using mixed metal centers in clustered SBUs, it is a good strategy to construct those isostructures with heterometallic systems, and it is believed that the presence of such HMOFs will further facilitate the exploration of multifunctional materials.