A new 3D pillared-layer porous framework with intersecting open channels in the Co/triazolate/carboxylate system: Synthesis, structure and magnetism

• Combination of 1,3-di-(1,2,4-triazole-4-yl)benzene ligand and 1,3,5-benzene-tricarboxylic acid as the co-ligands
• Unique 3-D open framework with intersecting channels
• Two trinuclear Co(II) secondary building units
• Antiferromagnetic interactions between the Co(II) cations

A new Co(II) coordination polymer, namely [Co6(btc)4(dtb)2(H2O)3]n (1) (H3btc = 1,3,5-benzenetricarboxylic acid, dtb = 1,3-di-(1,2,4-triazole-4-yl)benzene), has been synthesized by combining the mixed ligands of H3btc and dtb with Co(Ac)2·4H2O under solvothermal conditions. Single-crystal X-ray diffraction analysis reveals that 1 feature a 3D open framework with intersecting channels based on Co-btc3 − layers and btc3 − and dtb pillars. The magnetic property of the complex has also been investigated at room temperature.

A new Co(II) coordination polymer, namely [Co6(btc)4(dtb)2(H2O)3]n (1) (H3btc = 1,3,5-benzenetricarboxylic acid, dtb = 1,3-di-(1,2,4-triazole-4-yl)benzene), has been synthesized. Compound 1 features a 3-D open framework with intersecting channels based on Co-btc3 − layers and btc3 − and dtb pillars.Figure optionsDownload as PowerPoint slide