Dinuclear Molybdenum Tetracarbonyl Complexes of Tetradentate Nitrogen Ligands and Intermolecular Hydrogen Bonding in the Crystal Structure of N,N´-bis-[1-(pyridin-2-yl)ethylidene]-ethane-1,2-diamine

Authors : Ayfer MENTEŞ, Seda SEZEK, M. Emre HANHAN

Pages : 667-676

View : 10 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Multidentate N-ligands insert ignore into journalissuearticles values(Schiff bases); were prepared by the condensation of 2-acetylpyridine or 2-benzoylpyridine, and 1,2-diaminoethane or 1,6-diaminohexane insert ignore into journalissuearticles values(2:1 ratio); in ethanol. These ligands were reacted with Moinsert ignore into journalissuearticles values(CO);6 to obtain dinuclear metal tetracarbonyl compounds. Both terminal amine groups were seen to form imines from the reaction of mono-ketones with diamines in 2:1 or 1:1 ratios. The structures of these ligands and metal complexes were characterized by elemental analysis, and FT-IR, 1H-NMR, 13C-NMR, and LC-MS spectral techniques. N,N`-bis[1-insert ignore into journalissuearticles values(pyridin-2-yl);ethylidene]ethane-1, 2-diamine, which was obtained by the reaction of 2-acetylpyridine and 1,2-diaminoethane, was also characterized by single crystal X-ray structure analysis. The crystal packing is stabilized by intermolecular H-bonding and p-p interactions.
Keywords : Dinuclear, intermolecular H bonding, molybdenum, polyimines, Schiff base, tetracarbonyl