SELF-ASSOCIATION OF OXIMES AND STRUCTURE OF THE ν(OH...) BAND IN IR SPECTRA

Article abstract of DOI:10.1007/BF00748825

On the basis of an investigation of the ν(OH...) bands of the associated molecules of acetone (I), cyclohexanone (II), and cyclododecanone (III) oximes in self-associates and heteroassociates it was shown that the observed complex structure of the ν(OH...) band is explained unambiguously by Fermi-resonance perturbations of ν(OH...) during H-bond formation.It was shown that the number and position of the satellite bands do not depend on the nature of the base or the strength of the H bond, and the structure of the ν(OH...) and ν(OD...) bands differs in one and the same associate or H-complex but is identical in crystalline oximes diff ering in the structure of the crystal lattice .The assignment, accepted in the literature, of the individual maxima to the absorption of the dimers and trimers of the oximes is thereby rejected.By study of the concentration dependence of the ν(OH) band for the free molecules of the oximes (I, II, III) at concentrations C