Two new complexes {[Pb(L-1)(DMSO)(2)(H2O)]DMF}(n) (1, L-1 = 2,2'-dihydroxy-l,l'-dinaphthyl-3,3'-dicarboxylate) and {[Pb(L-2)(DMS O)center dot DMSO}(n) (2, L-2 = 2,2'-dimethoxy-l,l'-dinaphthyl-3,3'-dicarboxylate) have been synthesized under mild conditions and structurally characterized. Crystal structural analysis reveals that complex 1 adopts a 1D infinite chain structure which forms 2D sheet by hydrogen bonds interactions. Complex 2 possesses a 2D sheet structure, which was further assembled into a 3D supramolecular network through the pi-pi weak interactions. IR spectra indicates the carboxyl group coordinates with the Pb2+ ion. TGA shows that complex 2 is highly thermally stable up to 120 degrees C.