Dinuclear molybdenum tetracarbonyl complexes of tetradentate nitrogen Ligands and intermolecular hydrogen bonding in the crystal structure of N,N′-<i>bis</i>-[1-(pyridin-2-yl)ethylidene]-ethane-1,2-diamine
A Mentes, Seda Sezek, Murat Emre Hanhan, O Büyükgüngör
article (Uluslararası, Hakemli) | Yazar(lar): A Mentes, Seda Sezek, Murat Emre Hanhan, O Büyükgüngör | Yıl: 2007 | Dergi/Kurum: TURKISH JOURNAL OF CHEMISTRY | İndeks: WOS.SCI | Anahtar Kelimeler: dinuclear, intermolecular H-bonding, molybdenum, polyimines, Schiff base, tetracarbonyl — Özet: Multidentate N-ligands (Schi
Multidentate N-ligands (Schiff bases) were prepared by the condensation of 2-acetylpyridine or 2-benzoylpyridine, and 1,2-diaminoethane or 1,6-diaminohexane (2:1 ratio) in ethanol. These ligands were reacted with Mo(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, H-1-NMR, C-13-NMR, and LC-MS spectral techniques. N,N '-bis[1-(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.