Collect. Czech. Chem. Commun. 1981, 46, 240-245

Study of D-glyceraldehyde by circular dichroism and ultraviolet spectroscopy

Slavomír Bystrický, Tibor Sticzay, Mária Poláková and Michal Fedoroňko

Institute of Chemistry, Slovak Academy of Sciences, 809 33 Bratislava


The behaviour of D-glyceraldehyde in water, dimethyl sulfoxide, their mixtures and in 1,1,1,3,3,3-hexafluoro-2-propanol was studied by circular dichroism and UV spectroscopy in the 20-80°C temperature range. Fresh-prepared solutions of D-glyceraldehyde exist in a substantial measure in dimeric or oligomeric forms, which passed to a monomeric one. The different character of interaction of solvents with monomeric D-glyceraldehyde is discussed. The bisignate circular dichroic curves are associated with conformational equilibrium of rotamers. The presumption on their spatial arrangement is confronted with the quantum chemical calculation of the rotational strength.