Synthesis, structure and luminescent properties of neodymium(III) coordination polymers with 2,3-pyrazinedicarboxylic acid

► New coordination polymers [Nd2(pzdc)3(H2O)]n·nH2O and [Nd4(pzdc)6(H2O)2]n·3nH2O have been synthesized. ► The two isomorphous complexes may be prepared at different temperatures. ► Luminescent emission of complex I displays selectivity for heavy metal ions such as Pb2+, Hg2+ and so on.