Hannah

Tautomers of Acetylacetone (C₅H₈O₂)

Usually the keto tautomer is favored

Keto = ketone

Enol = alcohol

may also be referred to as an alkenol

Keto Acetylacetone

With geometry optimization

PubChem's 3D structure has both oxygens pointing in the same direction (left) while NIST has the oxygens pointing in different directions (right)

Error creating thumbnail: File missing

Proton NMR (Hartree-Fock)

A reminder of Proton NMR stretches: File:nmr1.gif

Enol Acetylacetone

Proton NMR (Hartree-Fock)

A reminder of Proton NMR stretches: File:nmr1.gif