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Z. Naturforsch. 2012,
67b, 465 – 472
doi:10.5560/ZNB.2012-0074
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
1 Department of Chemistry, Payame Noor University, 19395-3697 Tehran, I. R. Iran
2 Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, I. R. Iran
3 Department für Chemie, Universität zu Köln, Köln, Germany
Reprint requests to Dr. Farzin Marandi. E-mail:
f.marandi@gmail.com
Received March 8, 2012 / published online May 31, 2012
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(4,4′-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.
Key words: Silver(I), 4,4′-Bipyridine, Benzoyltrifluoroacetone Derivatives