Synthesis and characterization of three dinuclear complexes of AgI with 2,3-bis(2-pyridyl)pyrazine and derivated of trifluoromethyldiketonate ligands

• DOI: 10.1016/j.molstruc.2012.04.069
• Publication Date: 2012-05-01T13:57:45Z
• Authors: Farzin Marandi; Afsaneh Marandi; Mohammad Ghadermazi; Mohammad Rafiee; Harald Krautscheid
• Keywords: Pyrazine; Characterization

Abstract Three binuclear Ag I complexes based on a β-diketonate and N-donor ligands, [Ag 2 (2,3-bpp) 2 (hfa) 2 ] ( 1 ), [Ag 2 (2,3-bpp) 2 (ftfa) 2 ] ( 2 ) and [Ag 2 (2,3-bpp) 2 (ttfa) 2 ] ( 3 ), where 2,3-bpp is 2,3-bis(2-pyridyl)pyrazine, Hhfa is hexafluoroacetylacetone, Hftfa is furoyltrifluoroacetone and Httfa is thienoyltrifluoroacetone, were prepared and characterized by elemental analysis, IR and 1 H NMR spectroscopy as well as by X-ray crystallography. Additionally, thermal and electrochemical properties were studied. The complexes are structurally similar to each other. Three nitrogen atoms of the ligand 2,3-bpp in compounds 1 , 2 and 3 act as donors toward two Ag + ions in syn-conformation. Abundant weak interactions, such as π ⋯ π , C H ⋯ F, C H ⋯ π and C H ⋯ O interactions lead to 3D supramolecular networks for 1 – 3 .