Synthesis, crystal structure, IR and Raman properties of 1,2-diacetamidocyclohexane and its complexes with ZnBr2 and HBr3

Complexation of Zn by DAACH is due to the hyperpolarization of the amidic bond. IR and Raman studies of 1-3 agree with the X-ray results. This could be a model in the study of metal/proteins interactions or acidic denaturation of polypeptides.