A twofold inter­penetrating three-dimensional Cd^II coordination framework: poly[[μ₂-1,3-bis­(2-methyl-1H-imidazol-1-yl)benzene](μ₃-5-nitro­benzene-1,3-di­carboxyl­ato)cadmium(II)]

A cadmium(II) complex, prepared by reaction of Cd(NO₃)₂·6H₂O with 5-nitro­benzene-1,3-di­carb­oxy­lic acid and 1,3-bis­(2-methyl-1H-imidazol-1-yl)benzene in H₂O, possesses a twofold inter­penetrating 3,5-connected network with the {4².6⁵.8³}{4².6} topology. The compound exhibits fluorescence emissions in the solid state at room temperature.