Synthesis and Crystal Structure of Lead(II) Thenoyltrifluoroacetonate Complexes with Substituted 2,2' -Bipyridines: Interplay of Intermolecular Interactions in Crystals

Three substituted 2,2'-bipyridine adducts of lead(II) thenoyltrifluoroacetonate, [Pb(4,4'-dm-2,2’- bpy)(ttfa) , 1, [Pb(5,5' -dm-2,2’-bpy)(ttfa) , 2, and [Pb(4,4'-dmo-2,2’-bpy)(ttfa) ], 3, (4,4’ -dm- 2,2’-bpy, 5,5’-dm-2,2’-bpy, 4,4’-dmo-2,2’-bpy and ttfa are the abbreviations for 4,4’-dimethyl-, 5,5’-dimethyl-, and 4,4’-dimethoxy-2,2’-bipyridine, and thenoyltrifluoroacetonate, respectively) have been synthesized, characterized by elemental and thermal analysis, IR and H- and C-NMR spectroscopy, and studied by X-ray crystallography. The supramolecular features in these complexes are guided/controlled by weak directional intermolecular interactions.