摘要

By employment of the mixed-ligand strategy, a rare uninodal 9-connected metal-organic framework {[Co-6(OH)(2)(H2O)(4)(ina)(2)(cpt)(7)]NO3)(DMA)(4)(EtOH)(11)}(n) (1, Hina = isonicotinic acid, Hcpt = 4-(4-carboxyl-phenyl)-1,2,4-triazole, DMA = N,N-dimethylacetamide) has been successfully obtained and structurally characterized. The single-crystal X-ray diffraction studies indicate that the framework of 1 is composed of linear trinuclear {Co-3(OH)} clusters that extended by two types of linear bifunctional organic ligands to afford a 3D framework, which could be rationalized as a vnf network with the short Schlafli symbol of 3(9).4(20).5(7). To the best of our knowledge, 1 is the first example of 9-connected MOFs showing such a type of topological net. In addition, the magnetic properties of 1 have also been investigated.