%0 Journal Article %T Isomerism and Hydrogen Bonding in the Cis-enol Forms of 1-(n-pyridyl)butane-1,3-diones: A Theoretical Study %A Afzali, Raheleh %A Vakili, Mohamad %A Tayyari, Sayyed Faramarz %A Eshghi, Hossein %J Organic Chemistry Research %@ 2383-242X %D 2016