125471.fig.0011a
(a)
125471.fig.0011b
(b)
Figure 11: The 𝜈 O D bands in the IR spectra of monocrystalline samples of (a) d1-2-furanacetic acid (ca 10% H and 90% D). and (b) d1-2-furanacrylic acid (ca 65% H and 35% D). Temperature effect in the spectra.