A novel 44.66 5-connected metal-organic framework with strong fluorescent emission constructed by m-thioacetatebenzoic acid

A novel uninodal 5-connected metal-organic framework (MOF), [Cd2L2(4,4′-bipy)3/2(H2O)2]n (H2L=m-thioacetatebenzoic acid and 4,4′-bipy=4,4′-bipyridine), was prepared under hydrothermal condition. It features an unusual brick-wall shape layer by 4,4′-bipy, which consists of right- and left-handed helical chains arrayed alternatively and finally expands by L2– to a rare 5-connected nov (44.66) topology network. Photoluminescence study reveals that it displays intense structure-related fluorescent emission bands (λex=355 nm) at 450 nm in the solid state at room temperature.