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

Abstract

Two lead(ii) coordination complexes with 2-(4-fluoro-phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline formulated as [Pb(L)2(tlba)2)] (1) and [Pb(L)(dpea)]2 (2) (HTLBA = 2,3,4,5-tetrachlorobenzoic acid, H2dpea = diphenic acid) were synthesized under hydrothermal conditions. In 1, the neighboring [Pb(L)2(tlba)2)] molecules formed into a two-dimensional (2D) layer structure with C–Cl⋯π interactions and N–H⋯O hydrogen bond interactions. For 2, Pb1 and Pb1i 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.

N-Ligands mediated Co(Ⅱ) coordination polymer incorporating 5-hydroxyisophthalic acid: Syntheses, structures, and theoretical calculations

“…Especially, the nature of the organic ligand and the synthetic strategy are the key factors in the synthesis of coordination polymer with predicted structures. Up to now, N-donor ligands with excellent coordination properties and multidentate carboxylate ligands with various configurations and coordination modes have been widely employed to construct CPs due to them coordinating to the metal centers in monodentate, bidentate, or bridging modes [13][14][15][16]. Among poly-carboxylate ligands, the best studied are dicarboxylates, tricarboxylates, and V-shaped aromatic dicarboxylates such as biphenyldicarboxylate [17,18].…”