Synthesis and spectroscopic, thermal and electrochemical studies of mixed-ligand complexes of silver(i) with derivatives of benzoyltrifluoroacetonate and 4,4'-bipyridine, including the crystal structure of [Ag(4,4'-bpy)(tfcpb)]n

摘要

Three new mixed-ligand complexes of silver(I) with 4,4'-bipyridine and derivates of benzoyltrifluoroacetone (Htfpb: 4,4,4-trifluoro-1-phenyl-1,3- butandione, Htfcpb: 4,4,4-trifluoro-1-(4- chlorophenyl)-1,3-butandione and Htfmpb: 4,4,4-trifluoro-1-(4-methoxyphenyl)-1,3-butandione) were synthesized and characterized by elemental analyses and 1H NMR spectroscopy. Thermal and electrochemical properties were also studied. The single-crystal structure of [Ag(4,40-bpy)(tfcpb)]n shows a one-dimensional coordination polymer as a result of 4,4'-bpy bridging. The four-coordinate Ag(I) ions are linked into double chains by Ag?O contacts, which are extended into a 3D supramolecular structure through abundant weak interactions, such as π ? π, C-H?F, C-H?O, C- H?Cl and F?F contacts.