3-Fold and 6-Fold interpenetrating diamond nets based on the designed N, N '-dioxide 3,3 '-benzo(c)cinnoline dicarboxylic acid with highly sensitive luminscence sensing for NACs and Fe3+ ion

摘要

Based on the designed conjugated ligand of N,N'-dioxide 3,3'-benzo(c)cinnoline dicarboxylic acid (H2DBCD) with the aid of d(10)-metal cations and two ancillary bis(imidazole) bridges, two 3D coordination polymers, namely, {[Cd(DBCD)(1,3-bib)]center dot(H2O)(2)}(n) (1), {[Zn(DBCD)(1,4-bib)]center dot(H2O)(2)}(n) (2), were constructed here. Structural analyses show compounds 1 and 2 are 3-fold and 6-fold interpenetrating dia nets, respectively. Further luminscence studies suggested that the two CPs can selectively and sensitively detect Fe3+ cation in aqueous solution and nitrobenzene derivatives nitrobenzene (NB), p-nitrotoluene (PNT), p-nitroaniline (PNA) and p-nitrophenol (PNP) in DMF.