Two novel lead(ii) coordination complexes incorporating phenanthroline derivate: Synthesis and characterization

Two lead( ) coordination complexes with 2-(4-fluoro-phenyl)-1 -imidazo[4,5- ][1,10]phenanthroline formulated as [Pb(L) (tlba) )] ( ) and [Pb(L)(dpea)] ( ) (HTLBA = 2,3,4,5-tetrachlorobenzoic acid, H dpea = diphenic acid) were synthesized under hydrothermal conditions. In , the neighboring [Pb(L) (tlba) )] molecules formed into a two-dimensional (2D) layer structure with C–Cl⋯π interactions and N–H⋯O hydrogen bond interactions. For Pb1 and Pb1 ions are connected by four carboxylate groups from two dpea anions to yield a binuclear unit. Two L ligands are situated in two flanks of the dimer. The L ligands from dimers in the vicinity pile up by two π–π interactions to form a 2D supramolecular structure. Moreover, PXRD of 2 was also studied.