Structural investigation of lead(II) fluorine-substituted β -diketonates

Lead(II) 2,9-dimethyl-1,10-phenanthroline complexes with anionic (L = 4,4,4-trifluoro-1-phenyl-1,3-butandionate (tfpb) and thenoyltrifluoroacetonate (ttfa)) ligands, [Pb2(dmp)2(μ-L)2(L)2], have been synthesized and characterized by elemental analysis and IR, 1H NMR, and 13C NMR spectroscopy. The single-crystal structures of the compounds show the coordination number of Pb(II) to be eight with two N-donor atoms from a “dmp” ligand and six O-donors from the anionic ligands. Self-assembly of these complexes is realized by C–H ··· F–C, C–F ··· F–C and π–π stacking interactions.