Infrarotspektroskopie von Carbonsäurederivaten

Keto–iminol tautomerism in acetohydroxamic and formohydroxamic acids

“…In various solutions the equilibrium between the keto and iminol tautomers may exist which depends on type of the acid and on the nature of the solvent. The infrared spectra of various hydroxamic acids in solid state and different solutions [11,19,20] suggest that the acids in the solid state and in polar solvents exist in the keto form but in non-polar solvents the iminol form is also present.…”

Infrared Matrix Isolation Studies and Ab Initio Calculations of Formhydroxamic Acid

“…The equilibrium between the tautomers depends on the type of acid and on the nature of the solvent. The infrared spectra of various hydroxamic acids in solid state and in CCl 4 , CHCl 3 , dioxane, CH 3 CN solutions were also studied. − The spectra suggest that acids in the solid state and in polar solvents exist in the keto form, but in nonpolar solvents the iminol form is also present. The infrared absorption spectrum of a solid film of formhydroxamic acid was recorded by Orville-Thomas et al for the first time.…”